Psychiatry

814 questions

Question 701Question →

A 22-year-old man is diagnosed with schizophrenia after presenting with a seven-month history of auditory hallucinations, disorganized speech, and severe social withdrawal. His physician outlines a long-term pharmacologic treatment strategy, anticipating standard protocols including steps for potential treatment resistance. Arrange the following therapeutic interventions in the most appropriate sequential order, progressing from the initial treatment of a first episode to the management of severe, refractory disease.

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Answer

The correct sequence is: 1) Initiate a first-line antipsychotic monotherapy, 2) Switch to a different first-line antipsychotic monotherapy, 3) Initiate clozapine, and 4) Augment clozapine therapy.
The correct ordering directly reflects the widely accepted psychiatric algorithm for schizophrenia management. Initial intervention requires monotherapy to assess baseline response. A second distinct monotherapy ensures that the lack of response is not specific to the mechanism of the first drug. Failing two adequate trials establishes the diagnosis of treatment-resistant schizophrenia, which strictly mandates a clozapine trial. Finally, if clozapine proves insufficient, augmentation with another antipsychotic, mood stabilizer, or electroconvulsive therapy (ECT) is indicated.

Step-by-Step Solution

1
Determine the standard first-line treatment for a newly diagnosed patient with schizophrenia.
Initiation of a single second-generation or first-generation antipsychotic.
Monotherapy is always preferred initially to balance symptom control with the lowest possible side effect burden.
2
Identify the next best step for a patient who fails their first antipsychotic trial.
Switch to a different first-line antipsychotic monotherapy.
A lack of response to one medication does not immediately equal treatment resistance; a second distinct monotherapy trial must be attempted and failed.
3
Define and manage treatment-resistant schizophrenia.
Initiation of clozapine.
Once a patient fails two adequate trials of different antipsychotics, they meet criteria for treatment-resistant schizophrenia, for which clozapine is the only medication with proven superior efficacy.
4
Address the management of clozapine-refractory schizophrenia.
Augmentation of clozapine with another agent or ECT.
If an optimized clozapine trial fails, the algorithm culminates in combination therapy or neuromodulation.

Key Concept

Stepwise pharmacologic management algorithm for schizophrenia and treatment-resistant schizophrenia
Estimated Time:1m 0s
Question 702Question →

An 8-year-old boy is brought to the outpatient pediatric clinic by his father due to unusual facial movements. The father reports that for the past 4 months, the child has been frequently blinking his eyes forcefully and scrunching his nose. These movements occur multiple times a day, worsen when he is anxious about reading aloud, and are absent during sleep. The child does not make any repetitive sounds or vocalizations. Collateral history from his second-grade teacher confirms the facial movements; the teacher notes that while his academic performance is excellent, the boy has become increasingly withdrawn because classmates have started pointing out his "funny faces." The patient's early developmental milestones were met at appropriate ages, and a recent physical examination shows no other neurological abnormalities. The father is highly anxious and asks if his son has Tourette syndrome. Which of the following is the most likely diagnosis?

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Answer: Provisional tic disorder

Answer

The correct diagnosis is provisional tic disorder.
The correct diagnosis is provisional tic disorder. This patient presents with multiple motor tics (eye blinking, nose scrunching) but no vocal tics. Furthermore, the symptoms have been present for less than 1 year (specifically, 4 months). According to DSM-5 criteria, the presence of single or multiple motor and/or vocal tics for less than 1 year since onset meets the criteria for provisional tic disorder.

Step-by-Step Solution

1
Evaluate the patient's presenting symptoms and clinical history.
The patient exhibits rapid, sudden, non-rhythmic motor movements (eye blinking, nose scrunching) without any accompanying vocalizations.
To correctly identify the type of symptom (motor tics vs. vocal tics vs. complex stereotypies).
2
Assess the duration of the patient's symptoms.
The motor tics have been present for exactly 4 months.
To apply the correct DSM-5 timeline criteria for differentiating various tic disorders.
3
Synthesize the symptom profile and timeline to determine the diagnosis.
The presence of motor tics without vocal tics, present for less than 1 year, leads directly to a diagnosis of provisional tic disorder.
To select the single most accurate diagnosis among the neurodevelopmental disorder options.

Key Concept

Differentiating provisional tic disorder from Tourette syndrome and persistent motor tic disorder based on the presence of vocal tics and the 1-year symptom duration threshold.
Question 703Question →

Match each clinical presentation of a depressive disorder to the most appropriate next step in management or targeted therapy.

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Items

A 74-year-old retired teacher is brought to the emergency department. She has stopped eating for the past week, stating her 'stomach has turned to dust' as punishment for her sins. She exhibits severe psychomotor retardation and significant dehydration.
A 45-year-old executive reports a 6-week history of pervasive sadness, early morning awakenings, and a 6-kg (13-lb) weight loss. He is deeply troubled by his inability to sleep and poor appetite. He has no history of cardiac disease or seizures.
A 28-year-old graphic designer seeks treatment for low energy, poor concentration, and depressed mood. He recently stopped taking his prescribed sertraline due to severe anorgasmia, which caused significant marital distress.
A 31-year-old woman presents 8 weeks after delivering her first child. She reports feeling overwhelmed, tearful, and unable to enjoy time with her baby. She is exclusively breastfeeding and adamantly refuses all oral medications.

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Answer

The correct pairings align the patient with psychotic depression and food refusal to Electroconvulsive therapy, the patient with prominent insomnia and weight loss to Mirtazapine, the patient with SSRI-induced sexual dysfunction to Bupropion, and the medication-refusing postpartum patient to Interpersonal psychotherapy.
Each treatment choice addresses the specific nuances of the depressive episode. Electroconvulsive therapy is indicated for rapid response in psychotic depression with nutritional compromise. Mirtazapine targets depression accompanied by insomnia and weight loss. Bupropion is an effective antidepressant without serotonergic sexual side effects. Interpersonal psychotherapy is an evidence-based, non-pharmacological treatment suitable for mild-to-moderate peripartum depression.

Step-by-Step Solution

1
Evaluate the severity, specific symptom profile, and side-effect intolerances of each patient's depressive episode.
Identified distinct presentations: psychotic depression with nutritional compromise, depression with insomnia/weight loss, SSRI-induced sexual dysfunction, and medication-averse peripartum depression.
Antidepressant therapy must be individualized based on clinical urgency, symptom clusters, and patient preference.
2
Match the clinical presentation to the treatment modality with the most appropriate mechanism of action or safety profile.
Matched the elderly patient to ECT, the executive to mirtazapine, the designer to bupropion, and the postpartum mother to psychotherapy.
To maximize therapeutic efficacy while minimizing adverse effects and ensuring patient safety.

Key Concept

Tailoring treatment for major depressive disorder based on symptom clusters (e.g., insomnia/weight loss, sexual dysfunction, psychotic features with imminent risk) and patient preferences (e.g., breastfeeding).
Question 704Question →

An individual with a well-documented history of bipolar I disorder is evaluated in the emergency department for altered mental status. According to family members, the patient has become progressively lethargic, confused, and unsteady on their feet over the past 48 hours. The patient has been taking divalproex sodium for several years with excellent mood control. Two weeks ago, a neurologist initiated topiramate for migraine prophylaxis. On examination, the patient is disoriented to time and place. When asked to hold their arms outstretched with wrists extended, a bilateral, non-rhythmic, flapping tremor is observed. Laboratory studies, including a complete blood count, aspartate aminotransferase, alanine aminotransferase, and total bilirubin, are all strictly within normal limits. Which of the following is the most likely cause of this patient's current presentation?

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Answer: Accumulation of ammonia due to urea cycle interference

Answer

The correct answer is the accumulation of ammonia due to urea cycle interference, commonly known as valproate-induced hyperammonemic encephalopathy.
The correct answer identifies the accumulation of ammonia due to interference with the urea cycle. Valproic acid can induce hyperammonemic encephalopathy by inhibiting carbamoyl phosphate synthetase I, the rate-limiting enzyme of the urea cycle. This risk is profoundly increased when topiramate is added. Topiramate acts as a carbonic anhydrase inhibitor, decreasing the availability of bicarbonate, which is an essential substrate for the urea cycle. This synergistic inhibition prevents the liver from clearing ammonia, leading to systemic hyperammonemia. The ammonia crosses the blood-brain barrier, causing metabolic encephalopathy characterized by lethargy, confusion, and the classic physical finding of asterixis. Crucially, this syndrome frequently occurs without any evidence of direct hepatocellular damage, meaning liver function tests (AST, ALT) often remain entirely normal.

Step-by-Step Solution

1
Analyze the patient's current medication list and recent changes.
The patient is on a chronic regimen of divalproex sodium and recently started topiramate.
Identifying recent medication additions is crucial for recognizing adverse drug interactions in psychiatric and neurologic pharmacotherapy.
2
Evaluate the clinical presentation and physical exam findings.
The patient presents with subacute altered mental status, lethargy, and asterixis (a flapping tremor).
Asterixis is a hallmark sign of a metabolic encephalopathy, specifically indicating the accumulation of toxic metabolic byproducts like ammonia in the brain.
3
Interpret the provided laboratory data.
Hepatic transaminases (AST, ALT) and bilirubin are completely normal.
Normal liver function tests rule out acute liver failure (hepatocellular necrosis) as the cause of the metabolic encephalopathy, narrowing the differential to non-hepatic causes of hyperammonemia.
4
Synthesize the mechanism linking the medications to the clinical presentation.
Valproate inhibits carbamoyl phosphate synthetase I in the urea cycle. Topiramate inhibits carbonic anhydrase, reducing bicarbonate (a necessary substrate for the urea cycle). Together, they cause a synergistic failure of ammonia clearance.
Understanding this specific pharmacological synergy explains the isolated hyperammonemia and resulting encephalopathy despite structurally intact liver tissue.

Key Concept

Valproate-induced hyperammonemic encephalopathy is a life-threatening complication characterized by altered mental status and asterixis with normal liver enzymes. The risk is significantly increased when valproate is co-administered with topiramate.
Question 705Question →

A 28-year-old man comes to the clinic seeking help for severe anxiety. Two months ago, he was the driver in a severe motor vehicle collision where his passenger sustained critical injuries. Since then, he has experienced recurrent, distressing nightmares about the event, actively avoids driving or riding in cars, and feels emotionally detached from his family. He is constantly hypervigilant and has difficulty concentrating. He has a past psychiatric history of bipolar I disorder, but he discontinued his prescribed valproate one year ago because he felt stable. He is currently employed as an accountant and asks the physician to provide a medical note for a leave of absence. However, he explicitly requests that the specific diagnosis and details of the trauma not be disclosed to his employer. During the interview, he mentions that he sometimes hears the screeching of tires when trying to fall asleep, but he recognizes this is just a memory and not a real sound. Which of the following is the most appropriate next step in the management of this patient?

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Answer: Refer the patient for trauma-focused cognitive behavioral therapy and provide a general medical note that omits the specific psychiatric diagnosis

Answer

Refer the patient for trauma-focused cognitive behavioral therapy and provide a general medical note that omits the specific psychiatric diagnosis.
The correct answer addresses both the optimal psychiatric management and the ethical obligations of the physician. The patient's presentation of intrusive symptoms, avoidance, negative alterations in mood, and hyperarousal lasting for more than one month following a traumatic event is diagnostic of Post-Traumatic Stress Disorder (PTSD). First-line treatment for PTSD includes trauma-focused cognitive behavioral therapy (CBT) and/or serotonergic antidepressants (SSRIs or SNRIs). However, because this patient has a history of bipolar I disorder and is not currently taking a mood stabilizer, SSRI monotherapy carries a significant risk of precipitating a manic episode. Therefore, trauma-focused CBT is the safest and most appropriate first-line intervention. Additionally, the physician must respect the patient's autonomy and confidentiality. A competent adult has the right to determine what medical information is shared with an employer; providing a general medical note that verifies the need for a leave of absence without disclosing the specific diagnosis is the standard of care.

Step-by-Step Solution

1
Determine the primary diagnosis based on the clinical presentation and timeline.
The patient has Post-Traumatic Stress Disorder (PTSD), given the exposure to severe trauma, intrusive symptoms, avoidance, hypervigilance, and symptom duration of more than one month (2 months).
Accurate diagnosis is required before selecting treatment.
2
Evaluate the patient's psychiatric history for contraindications to standard pharmacotherapy.
The patient has unmedicated bipolar I disorder. Therefore, SSRI or SNRI monotherapy is contraindicated due to the risk of inducing a manic episode.
Preventing iatrogenic harm (manic switch) is a critical step in psychiatric management.
3
Select the appropriate first-line treatment and address the patient's ethical request.
Trauma-focused cognitive behavioral therapy is chosen as a safe first-line treatment. The physician provides a general note, respecting the patient's confidentiality request.
CBT is highly effective for PTSD and safe in unmedicated bipolar disorder. Competent patients have the right to control the disclosure of their medical information.

Key Concept

First-line management of PTSD in patients with unmedicated bipolar disorder and rules of patient confidentiality.
Question 706Question →

Match each clinical presentation to the most appropriate neurodevelopmental or behavioral psychiatric diagnosis.

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Items

Parents of a 3-year-old boy note that he rarely makes eye contact, does not engage in pretend play, and becomes extremely distressed if his daily routine is altered.
A 10-year-old boy is evaluated after school suspension. He frequently initiates physical fights, was caught stealing from lockers, and recently set fire to a trash can on school property.
A 7-year-old girl is often touchy and easily annoyed by others. She frequently argues with her teachers and actively defies their requests, but she has never been physically aggressive or destroyed property.
A 5-year-old girl who met all early developmental milestones began to experience a regression in spoken language and purposeful hand use around 18 months of age, now demonstrating constant hand-wringing movements.

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Answer

The correct matches align the 3-year-old boy with autism spectrum disorder, the 10-year-old boy with conduct disorder, the 7-year-old girl with oppositional defiant disorder, and the 5-year-old girl with Rett syndrome.
Each vignette provides pathognomonic or highly characteristic features for its respective disorder: autism spectrum disorder (social deficits and rigid routines), conduct disorder (severe rights violations like fire-setting), oppositional defiant disorder (defiance without severe aggression), and Rett syndrome (developmental regression with characteristic hand-wringing).

Step-by-Step Solution

1
Analyze the clinical features of the 3-year-old boy.
He demonstrates deficits in social communication and restricted, repetitive patterns of behavior.
Identifying these core symptom domains satisfies the diagnostic criteria for autism spectrum disorder.
2
Evaluate the behavioral patterns of the 10-year-old boy.
His behaviors include aggression toward people, theft, and deliberate destruction of property (fire-setting).
These severe violations of basic rights and societal norms distinguish conduct disorder from milder behavioral issues.
3
Assess the presentation of the 7-year-old girl.
She exhibits defiance and argumentativeness without engaging in severe acts of physical violence or property destruction.
This establishes the diagnosis of oppositional defiant disorder, ruling out the more severe conduct disorder.
4
Review the developmental trajectory of the 5-year-old girl.
She had a period of normal development followed by neurodevelopmental regression and the onset of stereotypic midline hand movements.
This classic temporal sequence and specific motor symptom profile uniquely identify Rett syndrome.

Key Concept

Accurate diagnosis of childhood behavioral and neurodevelopmental disorders requires distinguishing between specific symptom domains, severity of rule violations, and the presence or absence of developmental regression.
Question 707Question →

A 20-year-old male college student is brought to the student health center by his parents due to concerning behavior. His parents report that he has become increasingly socially isolated over the past eight months. During this time, he quit the university soccer team, stopped communicating with his friends, and his academic performance dropped significantly. He spends most of his days in his room with the blinds drawn and displays a distinct lack of emotional expression. For the last six weeks, the patient has firmly believed that the university administration is using the campus wireless network to monitor his thoughts. His parents have also observed him talking animatedly to himself when alone in his room. Vital signs and physical examination are unremarkable. A urine toxicology screen is negative. Which of the following is the most likely diagnosis?

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Answer: Schizophrenia

Answer

Schizophrenia
The correct answer is Schizophrenia. The diagnosis of schizophrenia requires the presence of active-phase symptoms (such as delusions and hallucinations) for at least 1 month, along with continuous signs of the disturbance (which can include prodromal negative symptoms) lasting for at least 6 months. This patient has a 9.5-month total history of disturbance (8 months of prodromal social isolation and affective flattening followed by 6 weeks of active psychosis), which meets the temporal criteria for schizophrenia.

Step-by-Step Solution

1
Identify the patient's active psychotic symptoms and their duration.
The patient has delusions (monitored by Wi-Fi) and hallucinations (talking to himself in an empty room) lasting for 6 weeks.
Establishing the presence and duration of active-phase symptoms is required for the Criterion A of psychotic disorders.
2
Identify any prodromal or residual symptoms and calculate the total duration of the illness.
The patient had an 8-month prodromal phase characterized by negative symptoms (social isolation, flattened affect, anhedonia). The total duration of the disturbance is 8 months + 6 weeks = 9.5 months.
The total duration of the disturbance (prodrome + active phase + residual phase) distinguishes between brief psychotic disorder, schizophreniform disorder, and schizophrenia.
3
Match the total duration to the corresponding diagnostic criteria.
A total duration greater than 6 months corresponds to schizophrenia.
Brief psychotic disorder is <1 month, schizophreniform disorder is 1-6 months, and schizophrenia is >6 months.

Key Concept

The diagnosis of schizophrenia requires at least 1 month of active-phase symptoms and continuous signs of the disturbance (including prodromal symptoms) persisting for at least 6 months.
Estimated Time:1m 15s
Question 708Question →

A 5555-year-old man comes to the primary care clinic seeking help to stop drinking alcohol. He reports consuming approximately a pint of vodka daily for the past six years. He says, "I was hospitalized two weeks ago with liver problems, and it really scared me into wanting to quit for good." He has not consumed alcohol for the past three days and currently reports no symptoms of withdrawal. Medical history is significant for major depressive disorder and chronic hepatitis C virus infection. Review of laboratory studies from his recent hospitalization shows an aspartate aminotransferase (AST) of 345 U/L345 \text{ U/L}, alanine aminotransferase (ALT) of 160 U/L160 \text{ U/L}, and total bilirubin of 4.5 mg/dL4.5 \text{ mg/dL}. His current medications include sertraline and a daily multivitamin. He requests a medication to help reduce his urge to drink. What is the most appropriate pharmacotherapy for this patient?

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Answer: Acamprosate

Answer

The correct answer is acamprosate.
The correct option is acamprosate. This patient has severe alcohol use disorder and requires pharmacotherapy to maintain abstinence. The two primary first-line options are naltrexone and acamprosate. However, the patient's markedly elevated aminotransferases and bilirubin indicate severe, acute hepatic dysfunction on top of chronic hepatitis C. Acamprosate is a glutamate NMDA receptor modulator that is not metabolized by the liver; it is excreted unchanged by the kidneys. This makes it the safest and most appropriate choice for treating alcohol cravings in patients with significant liver disease.

Step-by-Step Solution

1
Identify the patient's primary request and underlying condition.
The patient has alcohol use disorder and is requesting pharmacotherapy to reduce cravings and maintain abstinence.
Establishing the diagnosis guides the selection of first-line maintenance therapies, which primarily include naltrexone and acamprosate.
2
Evaluate the patient's medical comorbidities and laboratory findings.
The patient has chronic hepatitis C with acute hepatic injury, indicated by markedly elevated transaminases (AST 345 U/L345 \text{ U/L}, ALT 160 U/L160 \text{ U/L}) and hyperbilirubinemia (4.5 mg/dL4.5 \text{ mg/dL}).
Identifying comorbid conditions is critical, as many medications used for substance use disorders have organ-specific toxicity or contraindications.
3
Select the safest and most effective medication based on the patient's hepatic function.
Acamprosate is selected because it is renally excreted, whereas naltrexone and disulfiram are hepatotoxic and contraindicated in severe liver disease.
Acamprosate provides effective craving reduction while avoiding the risk of exacerbating the patient's acute hepatic dysfunction.

Key Concept

Acamprosate and naltrexone are first-line pharmacotherapies for alcohol use disorder. Acamprosate is renally excreted and is the preferred agent in patients with severe liver disease, whereas naltrexone is hepatotoxic and contraindicated in patients with acute hepatitis or liver failure.
Question 709Question →

Match each clinical presentation of an anxiety, obsessive-compulsive, or trauma-related disorder to the most specific, evidence-based psychotherapeutic intervention indicated for its management.

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Items

A patient avoiding physical exertion and caffeine due to fears that the resulting somatic sensations will trigger a sudden, overwhelming sense of impending doom.
A patient presenting with irregular patches of alopecia on the scalp and eyebrows who admits to plucking the hair during periods of intense studying to relieve tension.
A patient who experiences intrusive, distressing images of their house catching fire and subsequently checks the stove knobs exactly twenty times before leaving for work.
A patient struggling with chronic nightmares, profound guilt about surviving a combat ambush, and an exaggerated startle response to loud noises.

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Answer

Panic disorder pairs with interoceptive exposure therapy; Trichotillomania pairs with habit reversal training; Obsessive-compulsive disorder pairs with exposure and response prevention; Post-traumatic stress disorder pairs with eye movement desensitization and reprocessing.
Each correct pair links a distinct diagnostic presentation to its specialized, evidence-based behavioral therapy. Interoceptive exposure directly targets the fear of bodily sensations in panic disorder. Habit reversal training addresses the semi-automatic urges in body-focused repetitive behaviors like trichotillomania. Exposure and response prevention breaks the cycle of obsessions and neutralizing compulsions in OCD. Eye movement desensitization and reprocessing (EMDR) facilitates the processing of traumatic memories in PTSD.

Step-by-Step Solution

1
Establish the underlying DSM-5 diagnosis for each clinical vignette.
The vignettes describe Panic Disorder, Trichotillomania, Obsessive-Compulsive Disorder (OCD), and Post-Traumatic Stress Disorder (PTSD), respectively.
Identifying the distinct psychopathology is prerequisite to selecting the most targeted, evidence-based psychotherapy.
2
Match the established diagnosis to its primary specialized psychotherapeutic intervention.
Panic disorder requires interoceptive exposure; trichotillomania requires habit reversal training; OCD requires exposure and response prevention; PTSD requires EMDR or trauma-focused CBT.
Different anxiety and obsessive-compulsive spectrum disorders possess highly specific behavioral and cognitive mechanisms that dictate the precise modality of therapy.

Key Concept

Targeted psychotherapeutic modalities for anxiety, obsessive-compulsive, and trauma-related disorders.
Question 710Question →

A 24-year-old man with a history of schizophrenia is brought to the emergency department from a residential psychiatric facility due to profound muscle stiffness, confusion, and diaphoresis. His vital signs show a temperature of 39.8°C (103.6°F), blood pressure of 165/100 mmHg, and heart rate of 122/min. Physical examination reveals generalized "lead-pipe" rigidity and coarse tremors. He was recently transitioned to intramuscular fluphenazine decanoate. Laboratory studies reveal a serum creatine kinase level of 5,200 U/L. Arrange the following steps in the most appropriate chronological sequence for the management of this patient's current condition and his subsequent long-term psychiatric care.

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Answer

The correct sequence begins with the immediate discontinuation of the offending dopamine antagonist, followed immediately by aggressive supportive care, and then specific pharmacologic antidotes if necessary. After clinical resolution, a two-week washout period is required before cautiously restarting a lower-risk atypical antipsychotic.
The management of Neuroleptic Malignant Syndrome (NMS) follows a strict timeline of immediate, short-term, and long-term interventions. The absolute first step is the discontinuation of the offending agent (fluphenazine). This is followed by intensive supportive care (cooling, hydration) to prevent complications like acute kidney injury from rhabdomyolysis. If the patient does not respond adequately to supportive measures, specific pharmacologic therapies such as bromocriptine (dopamine agonist) or dantrolene (ryanodine receptor antagonist) are administered. Following successful treatment and resolution of symptoms, standard psychiatric guidelines dictate a minimum two-week washout period to allow the syndrome to completely clear and to allow receptor equilibration. Finally, when re-initiating treatment for the underlying schizophrenia, a medication with a lower risk of extrapyramidal symptoms and NMS, such as an atypical antipsychotic (e.g., quetiapine), should be selected and titrated cautiously.

Step-by-Step Solution

1
Diagnose the acute condition based on the clinical presentation.
The patient has Neuroleptic Malignant Syndrome (NMS), characterized by altered mental status, autonomic instability, hyperthermia, and lead-pipe rigidity in the setting of fluphenazine use.
Accurate diagnosis dictates the specific treatment pathway and urgency of intervention.
2
Determine the acute management algorithm for NMS.
The sequence is to first remove the trigger (stop fluphenazine), second stabilize physiology (IV fluids, cooling blankets), and third use targeted antidotes (bromocriptine or dantrolene) if the patient remains severely symptomatic.
This stepwise approach minimizes toxicity while addressing life-threatening complications like rhabdomyolysis and hyperthermia.
3
Determine the post-recovery psychiatric pharmacotherapy protocol.
After NMS resolves, a mandatory 2-week washout period must be observed before utilizing a lower-risk antipsychotic (e.g., quetiapine, clozapine) to manage the underlying schizophrenia.
NMS has a high recurrence rate if antipsychotics are restarted prematurely or if high-potency agents are reused.

Key Concept

Algorithm for acute treatment and post-recovery pharmacotherapy of Neuroleptic Malignant Syndrome (NMS).
Estimated Time:2m 0s
Question 711Question →

A 5-year-old boy is brought to the pediatric clinic by his parents due to distressing nighttime episodes that have occurred once or twice a week for the past 3 months. Typically, about 90 to 120 minutes after falling asleep, the child abruptly sits up in bed, screams loudly, and breathes heavily. His parents state that he appears terrified, is dripping with sweat, and thrashes his arms defensively. When they attempt to comfort him, he stares blankly, does not recognize them, and violently resists their attempts to console him. The episodes last 5 to 10 minutes, after which he lies down and peacefully sleeps through the rest of the night. In the morning, he has no memory of the events and acts completely normal. His past medical history is unremarkable, and he is meeting all developmental milestones. The parents are exhausted and extremely worried about a potential underlying psychological or neurological problem. Which of the following is the most appropriate next step in management?

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Answer: Reassurance and guidance on maintaining a safe sleep environment

Answer

Reassurance and guidance on maintaining a safe sleep environment
The correct answer focuses on reassurance and safety. The patient's presentation is classic for sleep terrors (pavor nocturnus), a non-REM parasomnia that typically affects children aged 3 to 7 years. These episodes characteristically occur during slow-wave (N3) sleep, which predominates in the first third of the night (e.g., 90 to 120 minutes after sleep onset). During an episode, the child exhibits intense autonomic arousal (tachycardia, diaphoresis, tachypnea), appears inconsolable, and does not recognize parents. Crucially, there is complete amnesia of the event the following morning. Because sleep terrors are benign and self-limiting (usually resolving by adolescence without sequelae), the most appropriate management is parental reassurance and guidance on maintaining a safe sleep environment (e.g., securing doors, clearing the floor, and removing sharp objects) to prevent injury if the child thrashes or sleepwalks. Attempting to forcefully wake the child during an episode is not recommended as it can prolong the event and worsen agitation.

Step-by-Step Solution

1
Analyze the timing and clinical features of the sleep episodes.
The episodes occur 90-120 minutes after sleep onset, involve autonomic arousal, unresponsiveness to comforting, and complete morning amnesia.
These features reliably distinguish non-REM parasomnias from REM parasomnias (like nightmares) and nocturnal seizures.
2
Establish the most likely diagnosis based on the clinical presentation.
The clinical picture perfectly matches sleep terrors (pavor nocturnus).
Sleep terrors typically occur during slow-wave (N3) sleep in the first third of the night and are highly common in children aged 3-7 years.
3
Determine the first-line management for the diagnosed condition.
The best approach is reassurance and maintaining a safe sleep environment.
Sleep terrors are a benign, self-limiting developmental phenomenon that do not typically require aggressive medical or psychological intervention.

Key Concept

Sleep terrors are a benign non-REM parasomnia occurring in the first third of the night, characterized by unresponsiveness and morning amnesia, and are best managed with reassurance and environmental safety.
Question 712Question →

A 26-year-old man comes to the clinic seeking treatment for opioid use disorder. He has been injecting heroin daily for the past three years. The patient states, "I am tired of living like this and want to start the medication that stops cravings." He reports his last heroin use was two hours ago. Currently, he appears comfortable and cooperative. Vital signs are temperature 37.0°C (98.6°F), blood pressure 118/76 mm Hg, pulse 72/min, and respiratory rate 14/min. Physical examination reveals pinpoint pupils and track marks on bilateral antecubital fossae. The physician discusses initiating buprenorphine-naloxone therapy. Arrange the following steps for initiating this therapy in the correct chronological order from first to last.

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Answer

The correct sequence is to first have the patient abstain from opioids for 12-24 hours, then objectively assess for mild-to-moderate withdrawal, administer the initial dose of buprenorphine, titrate the dosage based on symptom relief, and finally establish a maintenance dose with psychosocial counseling.
Buprenorphine is a partial mu-opioid agonist with a remarkably high affinity for the receptor. If administered while a full agonist (such as heroin) is still occupying the receptors, buprenorphine will aggressively displace the full agonist. Because it only partially activates the receptor, this sudden displacement leads to a rapid drop in overall opioid receptor stimulation, precipitating severe withdrawal symptoms. Therefore, the critical first steps in induction are instructing the patient to abstain from short-acting opioids for at least 12-24 hours, and then objectively verifying that they are in mild-to-moderate withdrawal (often utilizing the COWS scale). Only after objective withdrawal is confirmed can the initial dose be safely administered. Afterward, the dose is titrated, and the patient is transitioned to long-term maintenance therapy paired with psychosocial support.

Step-by-Step Solution

1
Recognize the pharmacology of buprenorphine.
Identify that buprenorphine is a partial mu-opioid agonist with a very high receptor affinity.
Understanding its affinity explains why it will aggressively displace full agonists (like heroin) from opioid receptors.
2
Determine the risk of immediate administration.
Conclude that giving buprenorphine now (2 hours post-heroin use) will cause severe precipitated withdrawal.
Displacing a full agonist with a partial agonist abruptly decreases the net opioid effect in the central nervous system.
3
Establish the safe induction protocol.
Sequence the management: abstain from opioids -> verify objective withdrawal -> give initial dose -> titrate dose -> long-term maintenance.
This standardized sequence ensures safe transition onto medication-assisted treatment without inducing iatrogenic withdrawal.

Key Concept

Buprenorphine induction requires patients to be in mild-to-moderate withdrawal prior to the first dose to prevent precipitated opioid withdrawal.
Estimated Time:1m 30s
Question 713Question →

Match each clinical presentation of a patient receiving antipsychotic therapy with the most appropriate next step in management.

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Items

A 25-year-old man on haloperidol therapy develops a sudden, painful, sustained contraction of his neck muscles and an involuntary upward gaze.
A 30-year-old woman taking risperidone for 4 weeks complains of intense inner restlessness and is observed constantly pacing. Her vital signs are stable.
A 45-year-old man with a 10-year history of fluphenazine treatment is noted to have new-onset, involuntary, repetitive lip-smacking and choreoathetoid finger movements.
A 38-year-old woman on olanzapine presents with a temperature of 103.5°F (39.7°C), severe lead-pipe muscle rigidity, tachycardia, diaphoresis, and elevated creatine kinase.

Matches

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Answer

Match acute dystonia to anticholinergics; akathisia to dose reduction/beta-blockers; tardive dyskinesia to VMAT2 inhibitors/clozapine; and neuroleptic malignant syndrome to antipsychotic discontinuation and supportive care.
Each clinical scenario describes a classic antipsychotic adverse effect with a highly specific treatment pathway. Acute dystonia requires immediate anticholinergic treatment. Akathisia is treated with dose reduction and beta-blockers. Tardive dyskinesia is managed by switching to a medication with a lower liability (e.g., clozapine) or adding a VMAT2 inhibitor. Neuroleptic malignant syndrome is a life-threatening emergency requiring immediate drug cessation, supportive care, and dopamine agonists.

Step-by-Step Solution

1
Analyze each clinical vignette to identify the specific antipsychotic-induced adverse effect based on symptom presentation and timeline.
Identified acute dystonia (Left 1), akathisia (Left 2), tardive dyskinesia (Left 3), and neuroleptic malignant syndrome (Left 4).
Accurate identification of the underlying extrapyramidal symptom or systemic reaction is required to select the correct intervention.
2
Match the identified adverse effect to its first-line, evidence-based management strategy.
Matched acute dystonia to benztropine/diphenhydramine, akathisia to propranolol, tardive dyskinesia to VMAT2 inhibitors or clozapine, and NMS to immediate discontinuation and bromocriptine.
Different antipsychotic adverse effects have entirely distinct pathophysiologies requiring specific pharmacologic or supportive treatments.

Key Concept

Management of Antipsychotic Adverse Effects
Question 714Question →

A 10-year-old girl is brought to the outpatient pediatric clinic by her parents due to persistent academic difficulties. She is currently in the fourth grade. Her teacher reports that she frequently loses her assignments, makes careless mistakes on tests, and seems to "space out" during reading and math lessons. These behaviors have been consistently noted since she was in the first grade. At home, her parents observe that she struggles to follow multi-step instructions and often leaves her chores half-finished. However, she can spend several hours intensely focused on painting and drawing without any distraction. Her recent hearing and vision screenings were normal. She has no history of behavioral outbursts or defiance. Which of the following statements regarding this patient's likely diagnosis and management are accurate? (Select all that apply)

Select all that apply

Show answer & explanation

Answer: The patient's clinical history meets the necessary chronicity and multidomain criteria for a diagnosis of attention-deficit/hyperactivity disorder.; The capacity to sustain intense focus on highly preferred activities, such as drawing, does not exclude the primary diagnosis.

Answer

The correct statements are that the patient meets the chronicity and multidomain criteria for attention-deficit/hyperactivity disorder (ADHD), and that her ability to hyperfocus on preferred activities does not exclude this diagnosis.
The correct answers highlight essential diagnostic features of ADHD. The patient demonstrates prominent symptoms of inattention (e.g., losing assignments, making careless mistakes, struggling with multi-step instructions) that occur in multiple settings (home and school) and have been present since early childhood (first grade). This fulfills the DSM-5 diagnostic criteria for ADHD. Furthermore, the ability to sustain intense attention on highly rewarding or preferred activities (often termed 'hyperfocus') is a well-documented phenomenon in patients with ADHD and does not preclude the diagnosis. Many children with ADHD can focus for hours on activities they find inherently stimulating, such as art or video games, while struggling significantly with mundane or externally imposed tasks.

Step-by-Step Solution

1
Evaluate the clinical presentation against DSM-5 criteria for ADHD.
The patient exhibits predominant inattention, frequent loss of items, and academic struggles in at least two settings (home and school), persisting since age 6 (before the age 12 cutoff).
Establishing the duration, setting, and age of onset is required to confirm a diagnosis of ADHD.
2
Analyze the significance of the patient's ability to focus on painting for long periods.
This behavior is recognized as 'hyperfocus,' a state of intense concentration on rewarding stimuli.
A common misconception is that the ability to concentrate on fun activities rules out ADHD; understanding hyperfocus prevents premature diagnostic exclusion.
3
Evaluate the distractors related to milestones, pharmacotherapy, and endocrine evaluation.
The distractors represent incorrect medical knowledge: executive dysfunction is not a global developmental delay, atomoxetine and MAOIs have a dangerous interaction, and low T4 with normal TSH indicates secondary (not primary) hypothyroidism.
Systematically ruling out incorrect diagnostic approaches and contraindicated therapies ensures safe and accurate clinical management.

Key Concept

Diagnosis of Attention-Deficit/Hyperactivity Disorder (ADHD) and its clinical nuances, including the phenomenon of hyperfocus.
Question 715Question →

A 28-year-old woman is brought to the psychiatry clinic by her husband. He reports that for the past month, she has been experiencing exceptionally low mood, sleeping up to 14 hours a day, eating very little, and expressing pervasive, inappropriate guilt. The husband notes that her psychiatric struggles began three years ago. Over the past three years, she has spent approximately thirty months experiencing either severe depression or acute mania. However, he specifically recalls a distinct four-week period last summer where her mood, energy, and sleep were completely normal, yet she firmly believed the television was broadcasting secret messages directed at her and frequently heard voices conversing about her actions. She takes no medications, and her urine toxicology screen is negative. Which of the following is the most likely diagnosis?

Show answer & explanation

Answer: Schizoaffective disorder

Answer

Schizoaffective disorder is the correct diagnosis because the patient has a history of major mood episodes comprising the majority of her illness, combined with at least 2 weeks of psychotic symptoms occurring in the absence of mood symptoms.
The correct answer is Schizoaffective disorder. This diagnosis requires an uninterrupted period of illness during which there is a major mood episode (depressive or manic) concurrent with Criterion A of schizophrenia (e.g., delusions, hallucinations). Crucially, to distinguish it from a mood disorder with psychotic features, there must be delusions or hallucinations for at least 2 weeks in the absence of a major mood episode during the lifetime duration of the illness. To distinguish it from schizophrenia, mood symptoms must be present for the majority of the total duration of the active and residual periods of the illness. This patient has a 3-year history of illness with mood symptoms present for 30 months (the vast majority of the time), but importantly, she had a 4-week period of prominent psychotic symptoms (delusions of reference and auditory hallucinations) in the absence of any mood symptoms.

Step-by-Step Solution

1
Evaluate the timeline and presence of mood symptoms.
The patient has a 3-year history of illness, with 30 months characterized by major mood episodes (severe depression and acute mania).
Establishing the total duration of mood episodes relative to the total illness duration is necessary to differentiate between schizophrenia and schizoaffective disorder.
2
Evaluate the timeline of psychotic symptoms relative to mood episodes.
The patient experienced a 4-week period of prominent psychosis (delusions and auditory hallucinations) while her mood was completely normal.
Identifying psychosis that occurs independently of mood episodes rules out primary mood disorders with psychotic features.
3
Synthesize the findings to determine the correct diagnosis.
The combination of major mood episodes present for the majority of the illness and a period of >2 weeks of psychosis in the absence of mood symptoms points to schizoaffective disorder.
These specific timeline criteria form the DSM-5 definition of schizoaffective disorder.

Key Concept

To diagnose schizoaffective disorder, a patient must have major mood episodes that are present for the majority of the total illness duration, AND they must exhibit delusions or hallucinations for at least 2 weeks in the absence of a major mood episode.
Question 716Question →

A number of patients present with unique adverse effects after initiating pharmacological treatment for major depressive disorder. For each clinical presentation, select the most likely responsible antidepressant.

Click a left item, then click its matching right item

Items

Sustained, dose-dependent elevations in blood pressure requiring antihypertensive management.
Significant weight gain and increased appetite in a patient who specifically requested a medication without sexual side effects.
A prolonged, painful erection lasting over four hours requiring emergency urologic intervention.
A new-onset generalized tonic-clonic seizure in a patient with a history of electrolyte abnormalities secondary to frequent purging.

Matches

Show answer & explanation

Answer

Venlafaxine matches with dose-dependent hypertension; Mirtazapine matches with weight gain and preserved sexual function; Trazodone matches with priapism; Bupropion matches with seizures in bulimia.
Each antidepressant agent has unique receptor binding affinities that produce distinct toxicity profiles. Norepinephrine reuptake inhibition (Venlafaxine) raises blood pressure. H1 antagonism combined with alpha-2 antagonism (Mirtazapine) stimulates appetite while sparing sexual function. Alpha-1 antagonism (Trazodone) disrupts penile detumescence, causing priapism. Norepinephrine-dopamine reuptake inhibition (Bupropion) lowers the seizure threshold, making it dangerous in bulimia.

Step-by-Step Solution

1
Evaluate the clinical presentation of dose-dependent hypertension.
Match with Venlafaxine.
Venlafaxine is a serotonin-norepinephrine reuptake inhibitor (SNRI) that increases vascular tone at higher doses due to noradrenergic effects.
2
Evaluate the clinical presentation of weight gain without sexual dysfunction.
Match with Mirtazapine.
Mirtazapine's strong antihistaminic (H1) action causes increased appetite, while its 5-HT2 and 5-HT3 antagonism prevents the sexual dysfunction typical of SSRIs.
3
Evaluate the clinical presentation of a prolonged, painful erection (priapism).
Match with Trazodone.
Trazodone can induce priapism due to its strong alpha-1 adrenergic receptor antagonism, which alters penile blood flow.
4
Evaluate the clinical presentation of a seizure in a patient with bulimia.
Match with Bupropion.
Bupropion lowers the seizure threshold. This risk is heavily magnified in patients with electrolyte shifts from purging behaviors.

Key Concept

Adverse effect profiles of atypical and SNRI antidepressants
Estimated Time:1m 30s
Question 717Question →

A 7-year-old girl is evaluated in the pediatric clinic due to academic difficulties. She is currently in the second grade. Her teacher reports that she has significant trouble reading aloud, frequently mispronounces words, and performs poorly on weekly spelling tests. However, she excels in mathematics and enjoys group art projects. Her parents report that she was a "late talker" but caught up by age 4. She achieved all motor milestones on time and is fully independent with dressing and feeding. She has several close friends at school and enjoys playing collaboratively. Audiology and optometry evaluations performed last week were entirely normal. Which of the following is the most appropriate next step in the management of this patient?

Show answer & explanation

Answer: Referral for comprehensive psychoeducational assessment

Answer

Referral for comprehensive psychoeducational assessment
The correct option is referral for comprehensive psychoeducational assessment. The patient's presentation of isolated difficulty with reading and spelling, despite normal intelligence (implied by intact math skills) and normal sensory exams, is highly suggestive of a specific learning disorder (SLD) with impairment in reading (dyslexia). The most appropriate next step is comprehensive psychoeducational testing. This evaluation typically includes standardized tests of intelligence (IQ) and academic achievement to establish the diagnosis, which requires academic skills to be substantially below those expected for the patient's chronological age and not better explained by intellectual disability or inadequate educational instruction.

Step-by-Step Solution

1
Analyze the patient's primary presenting symptom and academic profile
The patient has isolated deficits in reading and spelling with intact math skills, normal adaptive functioning, and normal hearing/vision.
To identify the core clinical problem and rule out sensory or global cognitive deficits.
2
Assess the patient's developmental and behavioral history
Past language delay has resolved; current motor, social, and adaptive milestones are age-appropriate. No signs of inattention, hyperactivity, or restrictive/repetitive behaviors are present.
To differentiate from global developmental delay, intellectual disability, ADHD, or autism spectrum disorder.
3
Determine the most appropriate management based on the likely diagnosis
The clinical picture strongly suggests a specific learning disorder (dyslexia). The next step is a formal psychoeducational assessment.
A formal diagnosis requires standardized intelligence and academic achievement testing to implement individualized educational accommodations.

Key Concept

Specific learning disorder (SLD) presents with academic difficulties (e.g., reading, writing, or math) that are substantially below expected for age, in the setting of normal intelligence, adequate instruction, and absence of sensory deficits. Diagnosis requires comprehensive psychoeducational testing.
Estimated Time:1m 0s
Question 718Question →

A 28-year-old woman comes to the clinic for a routine follow-up. She has a 5-year history of bipolar I disorder. Six months ago, she experienced a severe manic episode, and her psychiatric medication regimen was changed due to inadequate symptom control on lithium therapy. At that time, she was transitioned to a different mood stabilizer, and her mood symptoms have remained well-controlled since. She has no other medical conditions. Her only other medication is a combined oral contraceptive pill (ethinyl estradiol and levonorgestrel), which she has taken consistently at the same time every day for the past 3 years without any missed doses. Today, the patient reports a 6-week history of amenorrhea, breast tenderness, and morning nausea. A urine pregnancy test in the clinic is positive. Which of the following psychiatric medications was most likely initiated six months ago?

Show answer & explanation

Answer: Carbamazepine

Answer

Carbamazepine
The correct answer is Carbamazepine. This patient presents with an unintended pregnancy despite perfect adherence to her combined oral contraceptive pill (OCP), highly suggesting a pharmacokinetic drug interaction. Combined OCPs are primarily metabolized by the hepatic cytochrome P450 system, specifically CYP3A4. Carbamazepine is a mood stabilizer and anticonvulsant that acts as a potent inducer of several CYP450 enzymes, including CYP3A4. Initiation of carbamazepine significantly increases the metabolism and clearance of ethinyl estradiol and levonorgestrel, leading to subtherapeutic systemic hormone levels and subsequent contraceptive failure. Female patients of childbearing age starting carbamazepine must be counseled to use alternative or backup non-hormonal contraceptive methods (e.g., copper IUD, barrier methods).

Step-by-Step Solution

1
Analyze the patient's clinical presentation and medication history.
The patient has an unintended pregnancy despite perfect adherence to combined oral contraceptives, following the recent initiation of a new mood stabilizer for bipolar I disorder.
Identifying contraceptive failure in a highly adherent patient points toward a pharmacokinetic drug-drug interaction.
2
Determine the required mechanism of the drug interaction.
The new medication must be a strong inducer of hepatic cytochrome P450 enzymes (specifically CYP3A4), which metabolize the estrogen and progestin components of the contraceptive.
Enzyme induction accelerates the clearance of the contraceptive hormones, causing subtherapeutic systemic levels and allowing ovulation to occur.
3
Identify the medication from the options that matches this pharmacokinetic profile.
Carbamazepine is a well-known, potent CYP3A4 inducer used in the treatment of bipolar disorder.
Other options either do not affect CYP3A4, act as inhibitors, or have their own metabolism induced by contraceptives without affecting the contraceptive itself.

Key Concept

Carbamazepine is a potent inducer of hepatic cytochrome P450 enzymes (particularly CYP3A4). It accelerates the metabolism of combined oral contraceptives, which can lead to subtherapeutic hormone levels and unintended pregnancy.
Estimated Time:1m 15s
Question 719Question →

A son brings his 68-year-old mother to the geriatric psychiatry clinic due to a 6-week history of profound lethargy, worsening sadness, and uncharacteristic behavior. He reports that she now spends most of her day in bed and has lost 4.5 kg (10 lb) due to a near-total loss of appetite. During the interview, the patient repeatedly states that her internal organs are 'turning to dust' as a punishment for her past sins, and she mentions hearing a male voice that agrees with her. Her medical history includes severe osteoarthritis, for which she takes scheduled tramadol and acetaminophen. A review of her past psychiatric history reveals that at age 40, she experienced a 3-week episode characterized by a severely decreased need for sleep, rapid and pressured speech, and grandiose plans to start a nationwide business, which resulted in an involuntary psychiatric hospitalization. She was treated with medication at the time but discontinued it shortly after discharge and has not taken any psychiatric medications since. Vital signs are within normal limits. Physical examination is unremarkable. Which of the following is the most appropriate next step in management?

Show answer & explanation

Answer: Quetiapine

Answer

The correct answer is to initiate quetiapine, as it is a first-line agent for bipolar depression that simultaneously addresses her psychotic features without interacting dangerously with tramadol.
The correct answer is to initiate quetiapine. This patient's presentation of a severe depressive episode (sadness, lethargy, weight loss) complicated by psychotic features (somatic delusions and auditory hallucinations), combined with a clear history of a manic episode, establishes the diagnosis of bipolar I disorder, current episode depressed with psychotic features. Quetiapine is a second-generation antipsychotic that has demonstrated efficacy as a first-line monotherapy for bipolar depression. It provides the necessary mood stabilization while simultaneously targeting her acute psychotic symptoms. Furthermore, unlike traditional antidepressants, quetiapine does not carry a significant risk of inducing serotonin syndrome when co-administered with her current analgesic, tramadol.

Step-by-Step Solution

1
Evaluate the patient's psychiatric history to establish a baseline diagnosis.
The history of a 3-week episode of decreased sleep, pressured speech, and grandiosity requiring hospitalization confirms a diagnosis of bipolar I disorder.
Recognizing a history of mania is critical to differentiating unipolar depression from bipolar depression and avoiding inappropriate monotherapy.
2
Assess the current clinical presentation.
The patient is experiencing a major depressive episode with psychotic features, evidenced by somatic delusions (organs 'turning to dust') and auditory hallucinations.
Identifying the severity and presence of psychotic features determines the specific class of psychiatric medication required.
3
Review current medications for potential adverse interactions.
The patient is taking tramadol, a weak opioid agonist that also inhibits serotonin reuptake. Adding another strong serotonergic agent risks serotonin syndrome.
Polypharmacy in geriatric patients requires careful screening for drug-drug interactions, particularly regarding serotonergic load.
4
Select the most appropriate pharmacotherapy.
Quetiapine is selected because it is a first-line agent for bipolar depression, treats her psychotic features, and does not have a severe serotonergic interaction with tramadol.
An ideal agent must safely address both mood and psychosis concurrently.

Key Concept

Differentiating unipolar from bipolar depression with psychotic features and selecting appropriate pharmacotherapy while avoiding drug-drug interactions.
Estimated Time:1m 30s
Question 720Question →

Three weeks after surviving an armed robbery at his workplace, a 35-year-old bank teller is brought to the psychiatry clinic by his husband. The patient was held at gunpoint for several minutes during the incident. Since that day, he reports experiencing intense, distressing flashbacks of the weapon being pointed at his face, which often cause him to wake up sweating in the middle of the night. He strongly refuses to return to the bank, avoids watching any media that might depict crime, and states that he feels completely detached from his family. His husband notes that the patient is constantly "on edge" and becomes easily startled by sudden, normal noises like a door closing. He has no significant past medical or psychiatric history and takes no medications. The patient requests a daily medication to suppress his memories and reduce his hyperarousal. Which of the following is the most appropriate next step in management?

Show answer & explanation

Answer: Recommend exposure-based cognitive-behavioral therapy

Answer

The most appropriate management is to recommend exposure-based cognitive-behavioral therapy.
This patient's presentation of intrusive flashbacks, avoidance behaviors, emotional detachment, and hyperarousal following a life-threatening event that occurred exactly 3 weeks ago meets the diagnostic criteria for acute stress disorder (ASD). ASD is diagnosed when symptoms persist for 3 days to 1 month following a trauma. If symptoms persist beyond 1 month, the diagnosis changes to post-traumatic stress disorder (PTSD). The first-line, evidence-based treatment for ASD is trauma-focused cognitive-behavioral therapy (CBT), which typically incorporates exposure techniques. Early initiation of CBT is highly effective in reducing symptom severity and preventing the transition from ASD to PTSD. While the patient requests a medication, pharmacotherapy (such as SSRIs) is generally not recommended as the initial treatment for ASD.

Step-by-Step Solution

1
Analyze the timeline of the patient's symptoms relative to the traumatic event.
The traumatic event occurred 3 weeks ago, and symptoms have been present within this initial 1-month window.
Differentiating acute stress disorder from post-traumatic stress disorder relies strictly on the duration of symptoms (less than vs. greater than 1 month).
2
Identify the symptom clusters present to confirm the diagnosis.
The patient exhibits intrusion (flashbacks, nightmares), avoidance (refusing to return to the bank), negative alterations in mood (feeling detached), and hyperarousal (easily startled).
Confirming these four clusters ensures the diagnostic criteria for a trauma-related disorder (specifically acute stress disorder) are met.
3
Determine the appropriate intervention for acute stress disorder.
For acute stress disorder, trauma-focused cognitive-behavioral therapy is the first-line treatment.
Unlike PTSD, where SSRIs are first-line pharmacotherapy, acute stress disorder is primarily managed with early psychotherapeutic intervention to reduce severity and prevent progression to PTSD.

Key Concept

The diagnosis of acute stress disorder is made when trauma-related symptoms last between 3 days and 1 month; the first-line management is trauma-focused cognitive-behavioral therapy rather than pharmacotherapy.
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