Schizophrenia and multiple sclerosis.

Similarities in clinical course, age of onset, geographical distribution, and immunological responses of patients with schizophrenia and multiple sclerosis (MS) suggest that these two common illnesses of young adults may belong to a similar class of disorders. This review examines some of the similarities and differences between these two disorders and suggests that epidemiological, immunological, and viral studies considered useful in the investigation of causal factors in multiple sclerosis may also be pertinent to the search for causes of schizophrenia.