What is the minimum duration of active symptoms required for schizophrenia?

• A. One month of active symptoms.
• B. Two weeks.
• C. Three months.
• D. Six months.

Answer: (A)

The key idea is how long active symptoms must be present to meet the schizophrenia criteria. Active-phase symptoms need to endure for at least one month. During that month, you must have two or more of the hallmark symptoms (delusions, hallucinations, disorganized speech, disorganized or catatonic behavior, and negative symptoms), with at least one of the first three—delusions, hallucinations, or disorganized speech—being present. In addition, there must be continuous disturbance for at least six months in total, which includes any prodromal or residual periods before or after the active phase. If active symptoms last less than a month, it would point to a brief psychotic disorder; if they last longer (typically 1–6 months), that could be schizophreniform. So the minimum duration of active symptoms for schizophrenia is one month, paired with a six-month total duration criterion.