According to DSM-5, what is the minimum total duration of disturbance required to diagnose schizophrenia?

• A At least 6 months of continuous disturbance, including at least 1 month of active-phase symptoms ✓
• B At least 3 months of continuous disturbance
• C At least 1 month of continuous disturbance
• D At least 12 months of continuous disturbance, including at least 3 months of active-phase symptoms

Explanation

DSM-5 Criterion A requires continuous signs of disturbance persisting for at least 6 months, within which there must be at least 1 month of active-phase symptoms (delusions, hallucinations, disorganized speech, grossly disorganized or catatonic behaviour, or negative symptoms); this may include prodromal or residual periods. Option B reflects the older ICD-10 convention of 1 month for active symptoms but not the total duration. Options C and D are simply incorrect cutoffs.

Reference: Diagnostic and Statistical Manual of Mental Disorders (DSM-5), 5th ed.

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Written and medically reviewed by the StethoPrep medical team.