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Zorluk: OrtaSchizophrenia and Psychotic Disorders

A 19-year-old man is brought to the emergency department by his college roommate due to increasingly bizarre behavior. The roommate reports that for the past 21 days, the patient has been highly agitated, refusing to attend classes, and has barricaded himself in their shared dorm room. The patient confidently claims that foreign intelligence agents are tracking his movements through the campus Wi-Fi network. During the interview, the patient appears guarded, frequently pauses to whisper to the empty corner of the room, and his speech frequently derails into unrelated topics. His medical history is unremarkable, and he takes no medications. Vital signs and physical examination are within normal limits. A comprehensive urine toxicology screen is negative. Which of the following is the most likely diagnosis?

  1. Brief psychotic disorderCevap
  2. B
    Schizophreniform disorder
  3. C
    Schizophrenia
  4. D
    Delusional disorder
  5. E
    Schizoaffective disorder

Cevap

Brief psychotic disorder
The patient is presenting with an acute onset of delusions, auditory hallucinations, and disorganized speech. These are core positive symptoms of psychosis. The critical diagnostic feature in this vignette is the duration of symptoms, which the roommate states is exactly 21 days (3 weeks). Brief psychotic disorder is defined by the sudden onset of at least one core psychotic symptom (delusions, hallucinations, or disorganized speech) that lasts for at least 1 day but less than 1 month, with an eventual full return to the premorbid level of functioning. Since the patient's symptoms have been present for less than 1 month and toxicology is negative, brief psychotic disorder is the most accurate diagnosis.

Adım Adım Çözüm

1
Identify the primary psychiatric symptoms presented in the vignette.
The patient demonstrates delusions (believing agents are tracking him), auditory hallucinations (whispering to an empty corner), and disorganized speech (derailment).
Establishing the presence of core positive psychotic symptoms is the first requirement for diagnosing a schizophrenia spectrum disorder.
2
Determine the exact duration of the psychotic symptoms.
The symptoms have been present for exactly 21 days (3 weeks).
The duration of symptoms is the critical distinguishing factor between the primary psychotic disorders.
3
Rule out secondary causes of the psychotic episode.
The negative urine toxicology screen and normal physical examination lower the likelihood of a substance-induced or medical cause.
Primary psychiatric conditions are diagnoses of exclusion.
4
Synthesize the symptom profile and timeline to reach the final diagnosis.
Positive psychotic symptoms lasting between 1 day and 1 month confirms the diagnosis of brief psychotic disorder.
This timeline specifically excludes schizophreniform disorder and schizophrenia.

Anahtar Kavram

The diagnostic duration criteria that differentiate brief psychotic disorder (<1 month), schizophreniform disorder (1-6 months), and schizophrenia (>6 months).
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Konular

Schizophrenia and Psychotic Disorders

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