Psychotic disorders are characterized by an array of symptoms including delusions, hallucinations, disorganized speech, and disorganized or catatonic behaviors. Psychosis involves the loss of ego boundaries and a gross impairment in reality testing. Schizophrenia, the illness most frequently identified as a psychotic disorder, usually has an onset in late adolescence in males and early twenties in females. The lifetime prevalence of Schizophrenia is estimated to be between 0.5% and 1%. 
 
Disorders that include psychotic symptoms as a prominent aspect of their presentation include:  

Schizophrenia	Psychotic Disorder Not Otherwise Specified
Schizoaffective Disorder	Schizophreniform Disorder
Brief Psychotic Disorder	Delusional Disorder
Psychotic Disorder Due to a General Medical Condition	Shared Psychotic Disorder
Substance-Induced Psychotic Disorder