Social work exam prep continues… Text from the Encyclopedia of Mental Disorders; answer there or in comments.
[THIS DX] is a short-term, time-limited disorder. An individual with [THIS DX] has experienced at least one of the major symptoms of psychosis for less than one month. Hallucinations , delusions , strange bodily movements or lack of movements (catatonic behavior), peculiar speech and bizarre or markedly inappropriate behavior are all classic psychotic symptoms that may occur in [THIS DX].

That diagnosis is…Brief Psychotic Disorder!
How’d you do?