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Question 781Question →

Match each highly specific clinical presentation and diagnostic finding to the most likely corresponding substance-related etiology.

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Items

Prolonged extreme agitation lasting multiple days, severe autonomic hyperactivity (tachycardia, diaphoresis), and psychotic symptoms; routine urine drug screen is negative.
Acute onset of violent behavior, a dissociative state with diminished pain perception, prominent hypersalivation, muscle rigidity, and rotary nystagmus.
Erythematous perioral dermatitis, progressive muscle weakness, hyporeflexia, and laboratory findings of a normal anion gap metabolic acidosis with profound hypokalemia.
Acute onset of severe delirium, autonomic instability, and generalized tonic-clonic seizures occurring 12 to 24 hours after hospital admission in a patient who uses a 'club drug' for bodybuilding; the patient strictly denies alcohol use.

Matches

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Answer

Prolonged agitation with negative urine screen matches Synthetic cathinone intoxication. Violent behavior with rotary nystagmus matches Phencyclidine (PCP) intoxication. Perioral rash with normal anion gap metabolic acidosis matches Toluene (inhalant) toxicity. Acute delirium and seizures in a bodybuilder denying alcohol matches Gamma-hydroxybutyrate (GHB) withdrawal.
Each matching pair relies on distinguishing pathophysiological markers. Synthetic cathinones differentiate themselves via prolonged half-lives and negative UDS. PCP is uniquely characterized by rotary nystagmus and NMDA-mediated dissociative anesthesia. Toluene produces a distinct Type 1 RTA and localized contact dermatitis. GHB withdrawal, acting on GABA-B receptors, produces severe autonomic instability and seizures resembling delirium tremens, often seen in bodybuilders or club-goers.

Step-by-Step Solution

1
Analyze the duration and screening results for the first presentation.
Identifies that a prolonged amphetamine-like psychosis lasting several days with a negative urine drug screen is highly characteristic of synthetic cathinones.
Duration of action is a critical differentiator; cocaine lasts hours, while bath salts last days and evade standard assays.
2
Evaluate the neurologic and ophthalmologic signs in the second presentation.
Identifies rotary nystagmus and dissociative anesthesia as pathognomonic for PCP.
While many drugs cause agitation, the combination of diminished pain perception and rotary nystagmus isolates PCP from other stimulants or hallucinogens.
3
Assess the dermatologic and acid-base disturbances in the third presentation.
Connects perioral dermatitis to inhalant use and the specific metabolic derangement to toluene-induced Type 1 renal tubular acidosis.
Recognizing the mechanism of toluene toxicity explains the non-anion gap metabolic acidosis and resultant hypokalemic weakness.
4
Analyze the withdrawal timeline and patient demographic in the final presentation.
Differentiates from alcohol withdrawal due to the patient demographic (bodybuilder using a 'club drug') and identifies GHB withdrawal.
GHB operates on GABA receptors, and abrupt cessation causes a rapid-onset, severe hyperadrenergic withdrawal state mimicking delirium tremens.

Key Concept

Differentiating complex substance intoxication and withdrawal syndromes requires recognizing highly specific pathophysiologic signatures: synthetic cathinones (prolonged duration), PCP (rotary nystagmus), toluene (Type 1 RTA and hypokalemia), and GHB (GABA-mediated withdrawal mimicking severe alcohol withdrawal).
Question 782Question →

Match each patient presentation with the most appropriate next step in clinical management.

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Items

A 23-year-old female patient discovers a new, firm, mobile lump in her right breast during a routine self-examination.
A 48-year-old female presents with a hard, immobile 3-cm mass in the upper outer quadrant of her left breast, accompanied by subtle skin dimpling.
A 27-year-old postpartum patient reports left-sided breast pain, chills, and fever. Examination reveals a wedge-shaped area of erythema and induration without fluctuance.
A 31-year-old breastfeeding mother with a recent history of mastitis presents with worsening focal pain and a distinct, tender, fluctuant mass in her right breast.

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Answer

The 23-year-old patient requires a targeted ultrasound. The 48-year-old patient requires a diagnostic mammogram and targeted ultrasound. The 27-year-old patient with non-fluctuant erythema requires oral antibiotics and breast emptying. The 31-year-old patient with a fluctuant mass requires ultrasound-guided needle aspiration.
Clinical management of breast symptoms relies heavily on patient demographics and specific exam findings. The choice of initial imaging for a palpable mass is strictly dictated by the age cutoff of 30 years. For lactational infections, the presence of a fluctuant mass changes the management from medical therapy alone (antibiotics and drainage through feeding) to requiring procedural intervention (aspiration).

Step-by-Step Solution

1
Evaluate the patient's age to determine the correct imaging pathway for a new palpable breast mass.
Patients under 30 years old should undergo ultrasound primarily, whereas patients 30 years and older should undergo both mammography and ultrasound.
Age is the primary determinant for breast imaging modality due to changes in breast tissue density over time.
2
Differentiate between uncomplicated lactational mastitis and a lactational breast abscess based on physical exam findings.
The presence of induration and erythema alone points to mastitis, treated with antibiotics and continued feeding. The presence of fluctuance points to an abscess, requiring physical drainage.
Antibiotics alone cannot adequately penetrate and resolve a walled-off fluid collection (abscess).

Key Concept

Age-based imaging guidelines for palpable breast masses and the clinical differentiation between lactational mastitis and breast abscess.
Question 783Question →

Match each patient's clinical vignette to the most accurate psychiatric diagnosis.

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Items

A 32-year-old woman reports feeling low and hopeless for most of her life. For the past three years, she has experienced poor energy and low self-esteem on most days, without any symptom-free periods lasting more than a month.
A 24-year-old man presents with depressed mood and anxiety that started one month after his fiancée ended their engagement. He continues to work but feels highly distressed; he does not meet full criteria for a major depressive episode.
A 45-year-old woman with systemic lupus erythematosus presents with acute onset of severe depression and anhedonia two weeks after starting a high-dose oral glucocorticoid regimen for a recent disease flare.
A 29-year-old woman reports marked affective lability, irritability, and increased appetite that repeatedly occur during the week prior to menstruation and reliably resolve within a few days of follicular phase onset.

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Answer

Match the 32-year-old with chronic symptoms to persistent depressive disorder, the 24-year-old with recent stress to adjustment disorder, the 45-year-old on steroids to medication-induced depressive disorder, and the 29-year-old with cyclical symptoms to premenstrual dysphoric disorder.
Each diagnosis in the differential of depressive disorders has distinct requirements regarding timeline, triggers, and severity. Persistent depressive disorder requires at least 2 years of symptoms. Adjustment disorder requires an identifiable stressor within 3 months and sub-threshold symptoms for a major depressive episode. Medication-induced depressive disorder requires a plausible pharmacological trigger, such as systemic corticosteroids. Premenstrual dysphoric disorder requires symptoms strictly linked to the luteal phase of the menstrual cycle.

Step-by-Step Solution

1
Analyze the first vignette's timeline.
The patient has 3 years of chronic depressive symptoms without a 2-month break.
Chronicity of 2 or more years is the defining feature of persistent depressive disorder.
2
Evaluate the second vignette's inciting event and symptom severity.
Symptoms began shortly after a breakup and do not meet major depressive disorder criteria.
This presentation meets the criteria for adjustment disorder with depressed mood.
3
Assess the third vignette's clinical context.
Severe depressive symptoms emerged shortly after initiating high-dose glucocorticoids.
Corticosteroids are a classic trigger for medication-induced depressive or psychotic symptoms.
4
Review the fourth vignette's symptom pattern.
Mood lability and irritability are strictly tied to the luteal phase of the menstrual cycle.
This cyclical pattern is the absolute requirement for diagnosing premenstrual dysphoric disorder.

Key Concept

Differential diagnosis of depressive disorders based on symptom duration, inciting stressors, and cyclical patterns.
Question 784Question →

An emergency department physician is evaluating four patients who were brought in overnight with suspected substance intoxication. Match each patient's predominant physical examination findings to the most likely intoxicating substance.

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Items

Somnolence, pinpoint pupils, and a respiratory rate of 6 breaths/minute
Tachycardia, prominent conjunctival injection, and increased appetite
Combativeness, multidirectional nystagmus, and reduced perception of pain
Psychomotor agitation, dilated pupils, and acute substernal chest pain

Matches

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Answer

Somnolence/miosis matches Opioid; Conjunctival injection/appetite matches Cannabis; Nystagmus/combativeness matches Phencyclidine (PCP); Agitation/chest pain matches Cocaine.
Each substance produces a specific clinical toxidrome based on its unique receptor pharmacology. Opioids stimulate mu receptors causing miosis and respiratory depression. Cannabinoid receptor activation leads to conjunctival injection. PCP acts as an NMDA receptor antagonist causing nystagmus and dissociative anesthesia. Cocaine blocks monoamine reuptake, resulting in sympathomimetic excess and vasoconstriction.

Step-by-Step Solution

1
Analyze the first patient's presentation of somnolence, pinpoint pupils, and hypoventilation.
Matches opioid intoxication.
These findings represent the classic opioid toxidrome.
2
Analyze the second patient's presentation of red eyes, rapid heart rate, and hunger.
Matches cannabis intoxication.
Conjunctival injection is a highly specific physical finding for acute cannabis use in this context.
3
Analyze the third patient's presentation of combativeness, nystagmus, and lack of pain.
Matches phencyclidine (PCP) intoxication.
Multidirectional or rotary nystagmus in an agitated patient is the hallmark of PCP toxicity.
4
Analyze the fourth patient's presentation of agitation, dilated pupils, and chest pain.
Matches cocaine intoxication.
Sympathomimetic excess combined with myocardial ischemia strongly points to cocaine.

Key Concept

Substance-Related and Addictive Disorders
Question 785Question →

Match each gynecologic surgical procedure or specific operative step with the anatomical structure most at risk of iatrogenic injury during that intervention.

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Items

Clamping and transection of the suspensory ligament of the ovary (infundibulopelvic ligament) during an oophorectomy
Ligation of the uterine vessels at the level of the internal cervical os during a hysterectomy
Sharp dissection of the vesicouterine fold to create a bladder flap in a patient with a history of three cesarean deliveries
Suture placement into the sacrospinous ligament during an apical vaginal vault prolapse repair
Blind passage of trocar needles behind the pubic symphysis during a retropubic tension-free vaginal tape (TVT) procedure

Matches

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Answer

Infundibulopelvic ligament ligation risks the ureter at the pelvic brim. Uterine vessel ligation risks the ureter at the cardinal ligament. Vesicouterine fold dissection risks the bladder. Sacrospinous ligament fixation risks the pudendal nerve. Retropubic sling placement risks structures in the space of Retzius.
Correct mapping requires recognizing the exact three-dimensional relationships in the female pelvis. Each surgical step threatens a distinct structure based on proximity. The ureter has two classic danger zones: the pelvic brim (ovarian vessels) and the internal cervical os (uterine vessels). Anterior compartment dissections risk the bladder, particularly the dome or posterior wall when adhesions are present. Vault suspensions risk the deep pelvic neurovasculature (pudendal bundle), and retropubic passages risk the organs traversing the space of Retzius.

Step-by-Step Solution

1
Analyze the anatomical relationship for oophorectomy.
The suspensory (infundibulopelvic) ligament is ligated. This structure is intimately associated with the proximal ureter at the pelvic brim.
The ureter crosses the common iliac artery bifurcation just medial to the ovarian vessels.
2
Analyze the anatomical relationship for hysterectomy at the cervix.
The uterine vessels are ligated in the cardinal ligament. This step endangers the distal ureter.
The ureter passes directly inferior to the uterine artery ('water under the bridge') at this precise location.
3
Evaluate the risk of anterior compartment dissection.
Dissecting the vesicouterine fold (bladder flap), especially with scar tissue from prior cesarean deliveries, endangers the adjacent bladder.
Adhesions obliterate the normal tissue planes, making inadvertent cystotomy likely.
4
Identify the regional neurovascular risks in prolapse surgery.
Sacrospinous ligament fixation risks the pudendal nerve/vessels.
The pudendal bundle passes directly behind the ischial spine and lateral sacrospinous ligament.
5
Trace the path of retropubic sling trocars.
Trocars pass through the space of Retzius, risking the bladder, bowel, and local vasculature.
This is a blind passage behind the pubic symphysis, requiring intraoperative cystoscopy to rule out bladder perforation.

Key Concept

Gynecologic Surgical Anatomy and Iatrogenic Injuries
Estimated Time:1m 30s
Question 786Question →

Match each clinical vignette describing a patient with progressive cognitive decline to the most likely underlying neurocognitive disorder diagnosis.

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Items

A 55-year-old executive is fired after repeatedly making inappropriate sexual comments to subordinates. At home, she has become increasingly apathetic, neglects her personal hygiene, and obsessively consumes large quantities of candy. Her orientation and episodic memory are relatively preserved.
A 68-year-old mechanic exhibits severe, unpredictable fluctuations in daytime alertness and attention. His wife notes he frequently thrashes, punches, and yells while sleeping. Neurologic examination reveals cogwheel rigidity and bradykinesia, but no focal weakness.
A 72-year-old woman with poorly controlled diabetes and atrial fibrillation presents with prominent executive dysfunction and reduced processing speed. Her family reports her cognitive abilities worsened abruptly three months ago and have since plateaued. Exam shows an asymmetric Babinski sign.
A 75-year-old man presents with a 6-month history of a broad-based gait, describing his feet as feeling 'stuck to the floor.' He has recently developed pronounced psychomotor retardation, apathy, and episodes of urinary incontinence of which he seems unaware.

Matches

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Answer

Vignette 1 matches Frontotemporal neurocognitive disorder. Vignette 2 matches Major neurocognitive disorder with Lewy bodies. Vignette 3 matches Major vascular neurocognitive disorder. Vignette 4 matches Neurocognitive disorder due to normal pressure hydrocephalus.
Each major neurocognitive disorder has highly specific hallmark features during its early stages. Frontotemporal dementia (behavioral variant) targets the frontal lobes first, leading to profound personality shifts, hyperorality, and executive dysfunction before memory is significantly affected. Lewy body dementia is distinguished by the triad of fluctuating cognition, spontaneous parkinsonism, and complex visual hallucinations, frequently heralded by REM sleep behavior disorder. Vascular dementia relies on evidence of cerebrovascular disease, manifesting clinically as stepwise drops in cognition and focal neurologic deficits. Normal pressure hydrocephalus presents with a unique, potentially reversible triad of gait apraxia, urinary incontinence, and dementia.

Step-by-Step Solution

1
Analyze Vignette 1 for key distinguishing features.
Identified early disinhibition, apathy, and hyperorality with spared memory.
These are the diagnostic criteria for behavioral variant frontotemporal dementia.
2
Analyze Vignette 2 for specific neurologic and sleep abnormalities.
Identified REM sleep behavior disorder, fluctuating cognition, and parkinsonism.
These form the core clinical criteria required for diagnosing major neurocognitive disorder with Lewy bodies.
3
Evaluate Vignette 3 for temporal onset and associated risk factors.
Identified a stepwise cognitive decline temporally related to a presumed vascular event, confirmed by asymmetric upper motor neuron signs.
Abrupt deterioration followed by plateaus in a patient with severe cardiovascular risk factors indicates vascular dementia.
4
Examine Vignette 4 for syndromic triads.
Identified the Hakim-Adams triad: magnetic gait, urinary incontinence, and cognitive decline.
This specific combination of symptoms warrants evaluation for normal pressure hydrocephalus rather than primary neurodegenerative disorders.

Key Concept

Differentiating major neurocognitive disorders based on distinct initial clinical presentations, behavioral changes, temporal progression, and associated neurologic deficits.
Question 787Question →

Evaluate the following distinct patient presentations and pair each with the single most accurate psychiatric diagnosis.

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Items

A 34-year-old woman develops sudden-onset right arm paralysis immediately following a heated argument with her spouse. Neurologic examination shows preserved deep tendon reflexes and no evidence of a specific neuroanatomic lesion.
A 45-year-old man repeatedly visits his physician convinced he has pancreatic cancer due to occasional mild indigestion. He spends hours daily researching survival rates despite multiple negative CT scans and endoscopic evaluations.
A 28-year-old intensive care nurse is hospitalized for severe hypoglycemia. Laboratory studies show markedly elevated serum insulin levels with suppressed C-peptide and a negative sulfonylurea screen.
A 41-year-old woman reports constant, widespread joint and abdominal pain for the past year. Repeated extensive medical workups are unremarkable, but she devotes excessive time and energy to worrying about her persistent pain.
A 22-year-old woman with a BMI of 23 kg/m223 \text{ kg/m}^2 presents with bilateral parotid gland swelling, dental enamel erosion, and laboratory findings of hypokalemic, hypochloremic metabolic alkalosis.

Matches

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Answer

L1 pairs with Functional neurological symptom disorder; L2 pairs with Illness anxiety disorder; L3 pairs with Factitious disorder; L4 pairs with Somatic symptom disorder; L5 pairs with Bulimia nervosa.
Each clinical vignette presents classic pathognomonic features that differentiate DSM-5 psychiatric disorders. Accurate diagnosis relies on distinguishing the primary clinical driver: acute neurologic deficits (Conversion), fear of disease (Illness Anxiety), distress over actual physical symptoms (Somatic Symptom), intentional deception without external reward (Factitious), or compensatory purging behaviors (Bulimia Nervosa).

Step-by-Step Solution

1
Analyze the patient with non-anatomic arm paralysis following a stressor.
Identified as a neurological symptom inconsistent with known neuroanatomy.
Directs the diagnosis to functional neurological symptom disorder (conversion disorder).
2
Analyze the patient with extreme fear of pancreatic cancer but minimal symptoms.
Identified as extreme health anxiety out of proportion to actual somatic complaints.
Directs the diagnosis to illness anxiety disorder.
3
Analyze the nurse with unexplained hypoglycemia, high insulin, and low C-peptide.
Identified as intentional induction of illness (injecting exogenous insulin) to assume the sick role.
Directs the diagnosis to factitious disorder.
4
Analyze the patient with a one-year history of widespread pain and excessive worry.
Identified as highly distressing, actual physical symptoms paired with excessive psychological focus on them.
Directs the diagnosis to somatic symptom disorder.
5
Analyze the normal-weight patient with parotid swelling and metabolic alkalosis.
Identified as classic physical signs of purging behavior.
Directs the diagnosis to bulimia nervosa.

Key Concept

Differentiation of somatic symptom and eating disorders based on the presence of physical symptoms, the patient's underlying motivation, and specific clinical exam/laboratory findings.
Question 788Question →

Evaluate the following distinct adverse clinical outcomes observed in patients receiving pharmacotherapy for bipolar disorder. Match each clinical presentation to the specific psychotropic medication most strongly associated with its development.

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Items

Fetal ultrasound at 18 weeks gestation demonstrating downward displacement of the tricuspid valve leaflets into the right ventricle.
Development of a painful, blistering mucocutaneous rash with epidermal detachment spreading across the trunk within two weeks of medication initiation.
New-onset lethargy and confusion accompanied by laboratory evidence of severe euvolemic hyponatremia (serum sodium 122 mEq/L) and low serum osmolality.
Routine follow-up laboratory testing revealing newly elevated serum transaminases and prolonged prothrombin time, prompting concern for fulminant hepatic necrosis.

Matches

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Answer

The correct matches are: tricuspid valve displacement to Lithium; blistering mucocutaneous rash to Lamotrigine; euvolemic hyponatremia to Carbamazepine; and hepatotoxicity to Valproate.
Each mood stabilizer possesses a distinct, high-yield adverse effect profile that dictates clinical monitoring. Lithium is teratogenic (Ebstein anomaly) and causes nephrogenic diabetes insipidus and hypothyroidism. Lamotrigine requires slow titration specifically to mitigate the risk of Stevens-Johnson syndrome. Carbamazepine is a well-known inducer of SIADH, leading to hyponatremia. Valproate carries black-box warnings for hepatotoxicity, pancreatitis, and neural tube defects.

Step-by-Step Solution

1
Analyze each clinical presentation to identify the underlying pathophysiologic condition.
Identified Ebstein anomaly, Stevens-Johnson syndrome, SIADH/hyponatremia, and drug-induced hepatotoxicity.
Recognizing the specific adverse event is necessary before identifying the causative pharmacologic agent.
2
Correlate each identified condition with the known adverse effect profiles of common bipolar disorder maintenance therapies.
Lithium causes Ebstein anomaly; lamotrigine causes SJS; carbamazepine causes SIADH; valproate causes hepatotoxicity.
Testing core pharmacological knowledge of major mood stabilizers is a standard competency requirement.
3
Pair each clinical finding with the corresponding medication.
Matched all 4 items accurately based on drug-toxicity profiles.
Completes the matching requirements of the assessment.

Key Concept

Adverse effect profiles and toxicity monitoring of mood stabilizers used in bipolar disorder.
Question 789Question →

Match each clinical presentation with the most likely sleep-wake disorder diagnosis.

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Items

A 55-year-old obese man presents with loud snoring, witnessed gasping during sleep, and morning headaches.
A 22-year-old woman experiences overwhelming daytime sleepiness and sudden bilateral muscle weakness triggered by laughing.
A 45-year-old woman complains of a 'crawling' sensation in her legs occurring only when lying in bed, which improves with walking.
A 68-year-old man frequently punches and kicks his partner during sleep while 'fighting off attackers' in his vivid dreams.

Matches

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Answer

Obstructive Sleep Apnea matches with the snoring and obese patient. Narcolepsy Type 1 matches with the sleepiness and cataplexy presentation. Restless Legs Syndrome matches with the leg crawling sensation. REM Sleep Behavior Disorder matches with the dream enactment.
Each presentation matches a distinct sleep disorder mechanism: anatomical airway obstruction causes Obstructive Sleep Apnea; hypocretin deficiency causes the cataplexy seen in Narcolepsy Type 1; dopaminergic dysfunction is thought to drive the sensory urges in Restless Legs Syndrome; and brainstem pathway degeneration leads to the loss of atonia in REM Sleep Behavior Disorder.

Step-by-Step Solution

1
Analyze the first clinical vignette regarding the 55-year-old obese man.
The symptoms of loud snoring, witnessed gasping, and morning headaches indicate upper airway collapse during sleep.
This constellation of symptoms perfectly matches Obstructive Sleep Apnea.
2
Analyze the second clinical vignette regarding the 22-year-old woman.
The presence of overwhelming daytime sleepiness alongside sudden muscle weakness triggered by laughter (cataplexy) is identified.
Cataplexy is highly specific for Narcolepsy Type 1.
3
Analyze the third clinical vignette regarding the 45-year-old woman.
The 'crawling' sensation in the legs that occurs at rest and is relieved by movement is recognized.
These are the diagnostic clinical criteria for Restless Legs Syndrome.
4
Analyze the fourth clinical vignette regarding the 68-year-old man.
The act of physically fighting during vivid dreams indicates a failure of the normal motor paralysis that should occur during REM sleep.
This lack of REM atonia with dream enactment defines REM Sleep Behavior Disorder.

Key Concept

Clinical presentation and diagnostic criteria of primary sleep-wake disorders.
Question 790Question →

Match each acute psychiatric emergency or adverse medication effect with its most appropriate definitive pharmacological management.

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Items

A patient develops sustained upward deviation of the eyes (oculogyric crisis) and torticollis two days after starting haloperidol.
A patient presents with altered mental status, diaphoresis, hyperreflexia, and myoclonus after simultaneously taking fluoxetine and tramadol.
A patient exhibits lead-pipe muscle rigidity, hyperthermia, autonomic instability, and a markedly elevated creatine kinase level after receiving fluphenazine.
A patient reports an intense internal feeling of restlessness and an urge to constantly pace the room following an increase in their aripiprazole dose.

Matches

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Answer

Acute dystonia matches with benztropine/diphenhydramine. Serotonin syndrome matches with cyproheptadine. Neuroleptic malignant syndrome (NMS) matches with bromocriptine/dantrolene. Akathisia matches with propranolol.
Each psychiatric emergency involves a specific mechanism requiring a targeted pharmacological approach. Acute dystonia is caused by acute D2 receptor blockade leading to a relative excess of acetylcholine, thus requiring anticholinergics (benztropine). Serotonin syndrome results from overstimulation of 5-HT receptors and responds to the serotonin antagonist cyproheptadine. NMS is a life-threatening reaction to dopamine antagonism, treated with dopamine agonists (bromocriptine) or the ryanodine receptor antagonist dantrolene. Akathisia is a form of motor restlessness that best responds to centrally acting beta-blockers (propranolol).

Step-by-Step Solution

1
Analyze the clinical presentation to identify the specific toxidrome or extrapyramidal symptom (EPS).
Identified four distinct syndromes: acute dystonia (muscle spasms/oculogyric crisis), serotonin syndrome (hyperreflexia/myoclonus), NMS (lead-pipe rigidity/hyperthermia), and akathisia (motor restlessness).
Accurate recognition of the clinical syndrome is essential because these psychiatric emergencies have overlapping features but distinct pathophysiological mechanisms.
2
Match the identified syndrome with its targeted pharmacological reversal agent.
Dystonia requires anticholinergics; serotonin syndrome requires a serotonin antagonist; NMS requires a dopamine agonist or muscle relaxant; akathisia requires a beta-blocker.
Targeted therapies act directly on the disrupted neurotransmitter pathways (e.g., dopamine blockade vs. serotonin excess) to resolve the emergency.

Key Concept

Pharmacological management of acute psychiatric medication emergencies and toxidromes
Question 791Question →

Match each patient's clinical presentation with the most appropriate next step in management or specific therapeutic intervention.

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Items

An elderly individual in an acute severe depressive episode who is actively refusing food and fluids, presenting with severe dehydration and delusions of guilt.
A young adult presenting with profound sadness and psychomotor retardation, whose history includes a prior distinct episode of grandiosity, decreased need for sleep, and pressured speech lasting six days.
A patient with major depressive disorder who has shown only a partial response to an adequate 8-week trial of escitalopram, with persistent residual symptoms of fatigue and low motivation.
A healthy professional with a first-time episode of mild major depressive disorder who explicitly declines the use of any psychotropic medications.

Matches

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Answer

The clinical presentations map to their respective best management steps: the food-refusing elderly patient requires electroconvulsive therapy; the patient with past mania needs quetiapine monotherapy; the partial SSRI responder with fatigue benefits from bupropion augmentation; and the medication-averse patient should receive cognitive behavioral therapy.
Each matching pair accurately aligns the patient's unique clinical context (e.g., life-threatening symptoms, bipolar history, medication side effect profile, personal preference) with current psychiatric treatment guidelines.

Step-by-Step Solution

1
Evaluate the elderly patient's presentation for life-threatening features.
The patient has severe dehydration and delusions, indicating depression with psychotic features and imminent physical danger.
Immediate, rapid-acting interventions like ECT are necessary when depression threatens the patient's life through starvation or high suicide risk.
2
Analyze the young adult's psychiatric history prior to the depressive episode.
The history of grandiosity, decreased sleep, and pressured speech confirms a past manic episode, diagnosing Bipolar I Disorder.
Recognizing underlying bipolarity is critical to avoid prescribing antidepressant monotherapy, which can precipitate a manic switch.
3
Assess the treatment response of the patient on escitalopram.
The patient has a partial response but persistent fatigue and low motivation.
A partial response warrants augmentation; bupropion targets dopamine and norepinephrine, effectively treating residual fatigue without adding serotonergic side effects.
4
Incorporate the mild depression patient's treatment preferences.
The patient declines medication but needs treatment for an active depressive episode.
Evidence-based psychotherapy like CBT is equal in efficacy to medications for mild-to-moderate depression and honors patient autonomy.

Key Concept

Treatment selection in depressive disorders depends heavily on illness severity, the presence of psychotic or bipolar features, prior treatment responses, and patient preference.
Question 792Question →

Match each clinical vignette to the most accurate DSM-5 diagnosis.

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Items

A 22-year-old man has a 3-week history of elevated mood, decreased sleep, and grandiosity. He also reports hearing voices plotting against him for the past 2 months, including a 4-week period when his mood was completely normal.
A 29-year-old woman with a history of multiple major depressive episodes presents with a 5-day period of increased energy, rapid speech, and racing thoughts. She remains able to attend work and is not hospitalized.
A 24-year-old man with no prior psychiatric history is brought to the emergency department and hospitalized after 4 days of extreme agitation, euphoria, zero hours of sleep, and reckless financial behavior.
A 35-year-old woman reports a 3-year history of frequently fluctuating mood, involving distinct periods of mild depressive symptoms alternating with periods of mild elevated mood, without ever meeting full criteria for any mood episode.
A 40-year-old man develops acute-onset severe insomnia, pressured speech, and grandiose delusions three days after initiating a high-dose oral prednisone course for a severe asthma exacerbation.

Matches

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Answer

The vignettes correctly match to Schizoaffective disorder (due to psychosis in the absence of mood symptoms), Bipolar II disorder (hypomania with past depression), Bipolar I disorder (hospitalization indicating a manic episode), Cyclothymic disorder (chronic, subsyndromal fluctuations), and Substance/medication-induced bipolar disorder (triggered by corticosteroids).
Each diagnosis in the bipolar spectrum has strict DSM-5 requirements. Schizoaffective disorder requires independent psychosis. Bipolar II requires past major depression and current hypomania. Bipolar I requires mania (achieved here via hospitalization). Cyclothymia requires chronic sub-threshold symptoms. Substance-induced requires a clear exogenous trigger like corticosteroids.

Step-by-Step Solution

1
Assess the severity and duration of the elevated mood episodes.
Hospitalization indicates a manic episode (Bipolar I), while a 5-day episode without marked impairment is a hypomanic episode (Bipolar II).
Severity and duration are the primary differentiators between manic and hypomanic episodes.
2
Evaluate the relationship between psychotic symptoms and mood symptoms.
Psychosis occurring for at least 2 weeks without major mood symptoms points to schizoaffective disorder.
This differentiates schizoaffective disorder from a mood disorder with psychotic features.
3
Identify chronicity and potential external triggers.
A 3-year history of subsyndromal symptoms indicates cyclothymia, whereas symptom onset following prednisone use indicates a medication-induced etiology.
Ruling out substance effects and assessing long-term symptom patterns are required steps in DSM-5 psychiatric diagnosis.

Key Concept

Diagnostic differentiation of bipolar and related disorders based on episode duration, severity (hospitalization), chronicity, and temporal relationship to psychosis or medications.
Question 793Question →

Match each patient's clinical presentation with the underlying histopathologic or pathophysiologic finding most likely responsible for her condition.

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Items

A 31-year-old nulliparous female presents with spontaneous, bloody, unilateral discharge from the left nipple. Physical examination reveals no palpable breast masses or axillary lymphadenopathy.
A 19-year-old college student notices a smooth, rubbery, highly mobile, 3-cm nodule in the upper outer quadrant of her right breast that becomes tender just before menstruation.
A 53-year-old patient is evaluated for a new, firm, fixed breast lump with localized skin dimpling. She recalls severe bruising in the same area following a mountain biking accident four months ago.
A 58-year-old postmenopausal woman develops rapid-onset erythema, warmth, and diffuse pitting edema over the lower half of her left breast without an accompanying fever or leukocytosis.

Matches

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Answer

The clinical presentations correctly correspond to their respective underlying pathologies: the spontaneous bloody discharge is due to a fibrovascular core proliferation (intraductal papilloma); the mobile mass in a young woman is a stromal and epithelial proliferation (fibroadenoma); the post-traumatic fixed mass is adipocyte saponification with macrophages (fat necrosis); and the acute peau d'orange is dermal lymphatic obstruction (inflammatory breast cancer).
Each clinical vignette provides classic epidemiological and physical exam findings that directly correlate with specific histopathologic mechanisms of breast disease.

Step-by-Step Solution

1
Evaluate the 31-year-old patient with spontaneous, unilateral, bloody nipple discharge and no palpable mass.
Identify the presentation as highly suspicious for an intraductal papilloma.
Intraductal papillomas classically present with bloody or serosanguineous discharge and are characterized by a benign fibrovascular core lined by ductal epithelium.
2
Assess the 19-year-old patient with a smooth, mobile, rubbery breast mass that fluctuates with the menstrual cycle.
Diagnose a probable fibroadenoma.
Fibroadenomas are the most common benign breast masses in young women, composed of proliferating glandular epithelial structures and cellular stroma.
3
Analyze the 53-year-old patient's firm, fixed breast mass with skin dimpling following focal trauma.
Correlate the traumatic history and skin dimpling with fat necrosis.
Fat necrosis often mimics malignancy clinically but histologically shows saponification of fat, lipid-laden macrophages, and a giant cell reaction.
4
Examine the 58-year-old patient with rapid-onset erythema, warmth, and peau d'orange without infectious symptoms.
Recognize the classic signs of inflammatory breast cancer.
Inflammatory breast cancer presents with rapid breast swelling and peau d'orange due to neoplastic cells invading and obstructing the dermal lymphatic channels.

Key Concept

Pathophysiology and clinical presentation of common benign and malignant breast disorders.
Question 794Question →

An addiction medicine consultation team is reviewing multiple complex patient cases in the emergency department involving suspected acute intoxications. Match each distinct clinical presentation to the most likely responsible substance.

Click a left item, then click its matching right item

Items

3,4-Methylenedioxymethamphetamine (MDMA)
Synthetic cathinones
Gamma-hydroxybutyrate (GHB)
Dextromethorphan (DXM)

Matches

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Answer

MDMA matches with bruxism/hyponatremia; Synthetic cathinones match with prolonged delirium; GHB matches with rapid coma/awakening; Dextromethorphan matches with dissociative state/false-positive PCP.
Each substance produces a unique clinical toxidrome: MDMA is distinguished by hyponatremia and bruxism; synthetic cathinones by a remarkably prolonged severe agitated delirium; GHB by a deep but very brief coma; and DXM by dissociation and potential PCP cross-reactivity.

Step-by-Step Solution

1
Analyze the clinical features associated with MDMA intoxication.
MDMA causes empathogenic effects, bruxism, hyperthermia, and uniquely, hyponatremia.
Identifying the specific serotonergic toxidrome allows matching it to the sociability/hyponatremia presentation.
2
Evaluate the presentation of synthetic cathinone intoxication.
Bath salts cause severe sympathomimetic toxidrome with an exceptionally prolonged delirium or psychosis lasting several days.
Differentiating bath salts from standard amphetamines or cocaine relies on the extended duration of delirium and the lack of detection on standard drug screens.
3
Assess the clinical course of GHB overdose.
GHB toxicity is characterized by rapid, deep CNS depression that resolves abruptly.
This distinct kinetic profile matches the presentation of sudden coma followed by sudden, unpredictable awakening.
4
Review the toxidrome of high-dose dextromethorphan.
High-dose DXM acts as an NMDA antagonist, causing dissociation, nystagmus, and ataxia, and can cross-react on UDS.
This pharmacological profile matches the dissociative presentation that may trigger a false-positive PCP screen.

Key Concept

Differentiating the unique acute toxidromes and clinical kinetics of specific illicit substances and over-the-counter drugs of abuse.
Estimated Time:1m 30s
Question 795Question →

Match each patient's clinical presentation with the most accurate DSM-5 diagnosis based on the primary motivation for their symptoms or avoidance behavior.

Click a left item, then click its matching right item

Items

A 30-year-old avoids subways and crowded concerts because she fears escape would be difficult or help unavailable if she were to suddenly lose bladder control.
A 25-year-old avoids subways because he is intensely preoccupied with the belief that other passengers are observing his movements and judging him.
A 28-year-old avoids subways due to intrusive thoughts about contracting an infectious disease, which cause severe anxiety relieved only by repetitive hand sanitization.
A 40-year-old avoids all air travel due to an extreme fear triggered exclusively by airplanes, but comfortably takes subways and buses without distress.
A 35-year-old has recurrent, unexpected episodes of intense autonomic arousal. She does not avoid public places but worries daily about having another episode.

Matches

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Answer

The diagnoses are matched by identifying the underlying cognitive driver for each patient's distress: Agoraphobia involves fear of being trapped; Social Anxiety Disorder involves fear of scrutiny; OCD involves intrusive thoughts and compulsions; Specific Phobia involves an isolated situational trigger; and Panic Disorder involves unexpected attacks with anticipatory worry.
Each diagnosis in the DSM-5 anxiety and obsessive-compulsive spectrum is distinguished not merely by the presence of anxiety or avoidance, but by the specific cognitive etiology driving that behavior. Identifying whether avoidance stems from a fear of entrapment (Agoraphobia), fear of judgment (Social Anxiety), obsessions (OCD), or specific objects/situations (Specific Phobia) allows for precise diagnostic matching.

Step-by-Step Solution

1
Analyze the underlying motivation for avoidance or distress in each clinical vignette.
Identified core fears such as inability to escape, negative evaluation, contamination, isolated situational triggers, or fear of future unprovoked panic attacks.
Different psychiatric disorders can present with identical surface behaviors (e.g., avoiding subways or crowds), making the underlying cognitive driver essential for accurate diagnosis.
2
Map each core fear to the corresponding DSM-5 diagnostic criteria.
Matched fear of trapped situations to Agoraphobia, fear of scrutiny to Social Anxiety Disorder, obsessions to OCD, specific situational trigger to Specific Phobia, and unexpected attacks with worry to Panic Disorder.
Ensures accurate differentiation between highly overlapping anxiety, obsessive-compulsive, and trauma-related disorders.

Key Concept

Differentiating anxiety and related disorders based on the core cognitive driver and motivation for avoidance behavior.
Question 796Question →

Match each distinct clinical presentation with the most likely underlying neurocognitive etiology.

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Items

Recurrent, well-formed visual hallucinations, fluctuating cognition, and spontaneous features of parkinsonism.
Prominent changes in personality, behavioral disinhibition, hyperorality, and relative sparing of memory in the early stages.
Stepwise cognitive decline, prominent executive dysfunction, and evidence of focal neurological deficits on examination.
Rapidly progressive dementia over weeks to months, accompanied by startle myoclonus and periodic sharp wave complexes on EEG.

Matches

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Answer

The clinical presentations map to their respective etiologies based on core diagnostic features: hallucinations and parkinsonism match with Lewy body disease; behavioral changes and hyperorality match with frontotemporal dementia; stepwise decline matches with vascular dementia; and rapid progression with myoclonus matches with Creutzfeldt-Jakob disease.
Each neurocognitive disorder presents with a distinct constellation of early symptoms and temporal progression patterns that allow for accurate clinical differentiation prior to neuropathological examination.

Step-by-Step Solution

1
Evaluate the presentation featuring visual hallucinations, fluctuating cognition, and parkinsonism.
This maps to Major neurocognitive disorder with Lewy bodies.
These three symptoms constitute the core clinical criteria required for the diagnosis of Dementia with Lewy bodies.
2
Evaluate the presentation featuring early personality changes, disinhibition, and hyperorality.
This maps to Frontotemporal neurocognitive disorder.
These are the hallmark behavioral symptoms of the behavioral variant of frontotemporal dementia (Pick disease).
3
Evaluate the presentation featuring a stepwise cognitive decline and focal neurological deficits.
This maps to Vascular neurocognitive disorder.
Stepwise decline is characteristic of multi-infarct dementia, where each new microvascular or macrovascular event causes an abrupt drop in cognitive function.
4
Evaluate the presentation featuring rapid progression over weeks to months, accompanied by myoclonus.
This maps to Creutzfeldt-Jakob disease.
The extremely rapid timeline and the presence of startle myoclonus, confirmed by sharp waves on EEG, are classic pathognomonic signs of this prion disease.

Key Concept

Differentiating major neurocognitive disorders based on core clinical features and temporal progression.
Question 797Question →

Match each patient's comprehensive clinical vignette to the most accurate psychiatric diagnosis.

Click a left item, then click its matching right item

Items

A 19-year-old college freshman reports feeling tearful and having difficulty sleeping for the past 2 months since moving away from home. She feels overwhelmed by classes but denies anhedonia, guilt, or suicidal ideation. She is able to attend classes and feels her mood improve significantly when visiting her family.
A 28-year-old man presents with a 4-week history of severe anhedonia, hypersomnia, and feelings of worthlessness. Upon detailed screening, he reports a distinct 6-day period last year where he felt uncharacteristically energetic, slept only 3 hours a night without feeling tired, and impulsively bought a sports car he could not afford.
A 45-year-old woman develops severe depressed mood, emotional lability, and profound insomnia. These symptoms began two weeks after she was prescribed high-dose oral prednisone to manage a severe systemic lupus erythematosus flare. Prior to this, she had no history of psychiatric illness.
A 35-year-old woman presents with a 6-week history of pervasive sadness, inability to enjoy her usual hobbies, early morning awakenings, a 5-kg (11-lb) weight loss, and difficulty concentrating at work. She reports feeling guilty over minor past mistakes and states her performance at work has severely declined.

Matches

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Answer

The college student with homesickness has an adjustment disorder. The man with current depression and past hypomania has bipolar disorder. The woman on prednisone has a medication-induced depressive disorder. The woman with 6 weeks of pervasive anhedonia and somatic symptoms has major depressive disorder.
Correct diagnosis in depressive disorders relies on precise pattern recognition: distinguishing the sub-threshold, stressor-related presentation of adjustment disorder; identifying past hypomanic episodes that define bipolar disorder; recognizing temporal associations with offending agents like glucocorticoids; and confirming the full symptom cluster required for major depressive disorder.

Step-by-Step Solution

1
Analyze the timeline, symptom severity, and functional impairment of each clinical vignette.
Identified that the 19-year-old does not meet full MDD criteria and has a clear stressor. The 35-year-old fully meets MDD criteria with marked functional impairment.
Differentiating major depressive disorder from adjustment disorder requires evaluating symptom count (at least 5 for MDD) and severity of functional impairment.
2
Screen for history of elevated mood or external triggers (medications/substances).
The 28-year-old has a history of a 6-day hypomanic episode. The 45-year-old's symptoms clearly align with the initiation of high-dose corticosteroids.
Failing to identify past hypomania/mania leads to inappropriate unipolar MDD treatment, and failing to recognize medication triggers leads to unnecessary primary psychiatric diagnoses.

Key Concept

Discrimination between unipolar major depressive disorder, bipolar depression, adjustment disorder, and substance/medication-induced depressive disorder based on clinical history and timeline.
Question 798Question →

Match each clinical presentation with the most appropriate psychiatric diagnosis.

Click a left item, then click its matching right item

Items

Sudden onset of unilateral blindness with completely normal ophthalmologic and neurologic exams after witnessing a traumatic accident.
Excessive preoccupation with having pancreatic cancer for 8 months despite negative workups, with no active physical symptoms.
Persistent, distressing abdominal pain and fatigue for over a year with excessive, disproportionate anxiety and time devoted to these symptoms despite negative medical evaluations.
Surreptitious self-injection of insulin resulting in recurrent hypoglycemia (high insulin, low C-peptide), done to assume the sick role without obvious external reward.

Matches

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Answer

The presentations match as follows: unilateral blindness with normal exams corresponds to Conversion disorder; preoccupation with pancreatic cancer without symptoms corresponds to Illness anxiety disorder; chronic abdominal pain and fatigue with excessive worry corresponds to Somatic symptom disorder; and surreptitious insulin injection to assume the sick role corresponds to Factitious disorder imposed on self.
Each clinical presentation uniquely aligns with the core diagnostic criteria of a specific disorder within the somatic symptom and related disorders spectrum. Correct identification relies on evaluating the presence and nature of somatic symptoms, whether symptoms are intentionally produced, and the underlying motivation (primary vs. secondary gain).

Step-by-Step Solution

1
Analyze the first presentation regarding sudden blindness.
Identified as a neurological symptom inconsistent with known medical disease, pointing to conversion disorder.
Conversion disorder involves altered voluntary motor or sensory deficits without underlying neurological pathology, often following acute stress.
2
Evaluate the second presentation involving cancer preoccupation.
Recognized as illness anxiety disorder.
The patient has no significant somatic symptoms but exhibits high anxiety and preoccupation about acquiring a severe illness.
3
Assess the third presentation with abdominal pain and fatigue.
Matched with somatic symptom disorder.
The patient has actual distressing somatic symptoms paired with excessive, disproportionate thoughts, feelings, and behaviors regarding them.
4
Examine the fourth presentation involving surreptitious insulin use.
Classified as factitious disorder.
The hypoglycemia is intentionally produced to assume the sick role (primary gain), rather than for external incentives like avoiding work or obtaining compensation (secondary gain).

Key Concept

Differentiation of somatic symptom and related disorders based on symptom presence, intentionality, and underlying motivation.
Question 799Question →

Match each clinical vignette with the most appropriate psychiatric diagnosis from the somatic symptom and related disorders spectrum.

Click a left item, then click its matching right item

Items

A 28-year-old female medical resident is admitted for profound hypoglycemia (glucose 32 mg/dL). Labs show elevated insulin and low C-peptide. She denies medication use, tearfully demands a pancreatectomy for 'suspected insulinoma,' and has no external incentives.
A 45-year-old man involved in litigation following a minor car accident claims severe neck pain and cognitive disability. On formal neuropsychological testing, his performance is markedly worse than patients with severe brain injuries, showing inconsistent effort.
A 42-year-old man with occasional, mild caffeine-induced muscle twitches visits the clinic weekly, terrified he has Huntington disease. He spends hours daily researching the disease and checking his gait, despite consistently normal neurological exams.
A 38-year-old woman with a 3-year history of non-cardiac chest pain and fatigue has had multiple negative cardiac catheterizations. She states the pain is constantly on her mind and quit her job to rest, fearing an imminent heart attack.
A 25-year-old man develops sudden-onset right arm weakness after a marital argument. Examination reveals weakness during active elbow flexion but simultaneous palpable contraction of the triceps. He exhibits 'la belle indifférence' toward his deficit.

Matches

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Answer

Vignette 1 maps to Factitious disorder; Vignette 2 to Malingering; Vignette 3 to Illness anxiety disorder; Vignette 4 to Somatic symptom disorder; Vignette 5 to Functional neurological symptom disorder.
Each vignette provides pathognomonic clues to differentiate the psychiatric diagnoses. Intentional production with no external gain is factitious disorder; intentional production for external gain is malingering. Unconscious production with minimal symptoms but high disease fear is illness anxiety disorder; unconscious production with prominent physical symptoms is somatic symptom disorder; and incompatible neurologic findings indicate conversion disorder.

Step-by-Step Solution

1
Determine if the symptoms are intentionally produced or unconsciously experienced.
Vignettes 1 and 2 feature conscious deception; Vignettes 3, 4, and 5 involve unconscious symptom generation.
Establishing intent is the first critical branch point in evaluating somatic and factitious presentations.
2
Evaluate the motivation for the intentionally produced symptoms.
Vignette 1 involves primary gain (assuming the sick role) indicating Factitious disorder. Vignette 2 involves secondary gain (financial compensation) indicating Malingering.
The distinction between factitious disorder and malingering relies entirely on the presence or absence of an external incentive.
3
Analyze the focus of anxiety and symptom burden for the unconsciously produced symptoms.
Vignette 3 focuses on disease fear with minimal symptoms (Illness anxiety disorder). Vignette 4 focuses on prominent physical symptoms (Somatic symptom disorder). Vignette 5 presents with an anatomically incompatible neurological deficit (Functional neurological symptom disorder).
DSM-5 criteria differentiate these disorders based on symptom severity, chronicity, and specific neurologic incompatibility.

Key Concept

Differentiation of somatic symptom and related disorders based on intent, motivation, and symptom focus.
Question 800Question →

Which psychiatric diagnosis or behavioral characterization best corresponds to each of the following patient scenarios?

Click a left item, then click its matching right item

Items

A 35-year-old paralegal reports persistent, migrating abdominal pain and severe fatigue for eight months. Despite multiple negative endoscopies and CT scans, she spends several hours each night researching potential undiagnosed malignancies and frequently changes physicians.
A 42-year-old accountant has a six-month history of intense fear regarding pancreatic adenocarcinoma following a relative's recent death. He reports occasional mild dyspepsia, has completely normal diagnostic workups, yet insists on monthly abdominal ultrasounds to ensure nothing was missed.
A 29-year-old phlebotomist is admitted with polymicrobial bacteremia involving skin flora. Intravenous antibiotics are started, but blood cultures repeatedly remain positive. A search of her hospital room reveals concealed non-sterile syringes. She has no pending lawsuits or disability claims.
A 31-year-old warehouse worker reports bilateral lower extremity paralysis following a minor slip at work. Complete neurological examination and spinal MRI are unremarkable. He is actively suing his employer for permanent disability compensation and becomes hostile when discharged.

Matches

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Answer

The scenarios represent Somatic symptom disorder, Illness anxiety disorder, Factitious disorder imposed on self, and Malingering, respectively.
Correct matching distinguishes the somatic spectrum by evaluating the prominence of physical symptoms (Somatic symptom vs. Illness anxiety) and the motivation for deceptive behaviors (primary gain in Factitious disorder vs. secondary gain in Malingering).

Step-by-Step Solution

1
Evaluate symptom severity and health-related behaviors for unconscious disorders.
The paralegal has prominent somatic symptoms and excessive thoughts about them (Somatic symptom disorder), whereas the accountant has minimal symptoms but extreme anxiety about acquiring a disease (Illness anxiety disorder).
Differentiates between Somatic symptom disorder and Illness anxiety disorder based on the physical symptom burden.
2
Assess for evidence of deception or intentional symptom fabrication.
Both the phlebotomist and the warehouse worker exhibit clear signs of feigned or self-induced illness, ruling out unconscious disorders like conversion disorder.
Identifies intentionality as the key driver of the clinical presentation.
3
Determine the underlying motivation for deceptive behavior.
The phlebotomist seeks the sick role (primary gain), indicating Factitious disorder, while the warehouse worker seeks financial compensation (secondary gain), indicating Malingering.
Differentiates between Factitious disorder and Malingering based on the presence of external rewards.

Key Concept

Differential diagnosis of somatic symptom and related disorders based on symptom severity, symptom intentionality, and underlying motivation.
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