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Case Lab · Type C · Developing

F29 · Stage 1

A secondhand report, nothing more

A landlord calls a mental health helpline to report that one of his tenants has 'been acting suspicious and paranoid for a while now' and occasionally talks to himself in the hallway. The landlord has never spoken with the tenant directly about this, does not know how long it has actually been going on, has no information about hallucinations, delusions, or specific beliefs, and the tenant has not been seen or interviewed by any clinician.

Based on this secondhand landlord report alone, what is the best classification decision?