Schizophrenia

A person experiencing schizophrenia may demonstrate symptoms such as disorganised thinking, auditory hallucinations, and delusions. In severe cases, the person may be largely mute, remain motionless in bizarre postures, or exhibit purposeless agitation; these are signs of catatonia. The current classification of psychoses holds that symptoms need to have been present for at least one month in a period of at least six months of disturbed functioning. A schizophrenia-like psychosis of shorter duration is termed a schizophreniform disorder. No one sign is diagnostic of schizophrenia, and all can occur in other medical and psychiatric conditions. Social isolation commonly occurs and may be due to a number of factors. Impairment in social cognition is associated with schizophrenia, as are the active symptoms of paranoia from delusions and hallucinations, and the negative symptoms of apathy and avolition. Many people diagnosed with schizophrenia avoid potentially stressful social situations that may exacerbate mental distress. Late adolescence and early adulthood are peak years for the onset of schizophrenia.