Schizophrenia Spectrum and Other Psychotic Disorders

Sudden onset of 1+ of delusions, hallucinations, disorganized speech, or grossly disorganized/catatonic behavior, lasting at least 1 day but less than 1 month, with eventual full return to premorbid level of functioning.

A distinct psychomotor syndrome marked by markedly decreased, excessive, or abnormal motor activity (e.g., stupor, catalepsy, waxy flexibility, mutism, negativism, posturing, mannerisms, stereotypy, agitation, grimacing, echolalia, echopraxia), diagnosed when at least 3 of 12 characteristic features are present, regardless of the underlying condition it accompanies.

One or more delusions lasting a month or longer, with functioning that is not markedly impaired and behavior not obviously bizarre or odd outside the direct impact of the delusion, and without the broader symptom picture of Schizophrenia.

A residual classification for presentations with psychotic-spectrum symptoms (delusions, hallucinations, disorganized speech/behavior, negative symptoms) causing clinically significant distress or impairment that do not meet full criteria for any specific disorder in this chapter.

Prominent hallucinations or delusions judged, based on history, physical examination, or laboratory findings, to be the direct pathophysiological consequence of another medical condition, not occurring exclusively during delirium.

An uninterrupted period of illness featuring a major mood episode (depressive or manic) concurrent with active-phase schizophrenia symptoms, plus a period of at least two weeks of delusions or hallucinations WITHOUT a major mood episode, with mood symptoms present for the majority of the total illness duration.

A disorder involving at least two of five core symptom domains (delusions, hallucinations, disorganized speech, grossly disorganized/catatonic behavior, negative symptoms), with continuous signs persisting for at least six months and significant functional decline.

The same core active-phase psychotic symptoms as Schizophrenia (delusions, hallucinations, disorganized speech, grossly disorganized/catatonic behavior, negative symptoms), but with a total duration of at least 1 month and less than 6 months -- functioning as a time-bound diagnosis given either when an episode is still resolving within that window or, if it later exceeds 6 months, before being reclassified as Schizophrenia.

Prominent delusions and/or hallucinations that develop during or soon after substance intoxication or withdrawal, or after exposure to a medication, with evidence from history, exam, or labs that the substance/medication is etiologically related to the psychotic symptoms.