Symptoms precede substance use and persist after cessation 1+ months.

• A. Symptoms Preceding Substance Use
• B. After Cessation Symptoms
• C. Post-Use Psychosis
• D. Primary Psychotic Disorder

Answer: (A)

The key idea is distinguishing substance-related psychosis from a primary psychotic disorder by when symptoms start relative to substance use. If psychotic symptoms begin before any substance use and continue after stopping, including lasting 1 month or more, this pattern argues against the idea that the psychosis is caused by the substance. It points toward a primary psychotic disorder that is independent of substance effects. Therefore, describing the situation as symptoms preceding substance use best captures the important temporal clue that supports a non-substance-induced psychosis. The other descriptions focus on symptoms arising after cessation or during/after use, which do not fit the lasting, pre-existing onset that persists beyond withdrawal or elimination.