DSM-5 criteria:
(at least one of):
delusions
hallucinations
disorganized speech
grossly disorganized or catatonic behavior
negative symptoms, diminished emotional expression
AND
impairment in one area of functioning for a period of time
work, relationships, self-care
behavioral excesses & distortions
delusions
hallucinations
behavioral deficits
avolition
asociality
anhendonia
blunted affect
alogia
experience domain & expression domain