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Published Online:https://doi.org/10.1176/ps.32.8.533

This month's case illustrates how the Diagnostic and Statistical Manual of Mental Disorders, third edition, has categorized disorders in which affective and psychotic features occur simultaneously. The patient also presents an interesting combination of intermittent and chronic symptoms. The guest expert is Nancy C. Andreasen, M.D., associate professor of psychiatry at the University of lowa and a member of the American Psychiatric Association's task force on nomenclature and statistics. Dr. Andreasen has conducted extensive research on the nature of thought disorder in affective and schizophrenic disorders.

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