Schizophrenia

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Schizophrenia

No single characteristic is present in all types of schizophrenia. The risk factors include a family history of schizophrenia. Schizophrenia is thought to affect about 1% of the population worldwide.

Schizophrenia appears to occur in equal rates among men and women, but women have a later onset. For this reason, males tend to account for more than half of patients in services with high proportions of young adults. Although the onset of schizophrenia is typically in young adulthood, cases of the disorder with a late onset (over 45 years) are known.

Childhood-onset schizophrenia begins after the age of 5 and, in most cases, after relatively normal development. Childhood schizophrenia is rare and can be difficult to differentiate from other pervasive developmental disorders of childhood, such as autism.

Review Date: 05/08/2006
Reviewed By: Paul Ballas, D.O., Department of Psychiatry, Thomas Jefferson University Hospital, Philadelphia, PA. Review provided by VeriMed Healthcare Network.