PMID: 4073315Dec 1, 1985Paper

DSM-III implications of the diagnoses of catatonia and bipolar disorder

The American Journal of Psychiatry
R K Ries


Although catatonia has traditionally been thought of as a type of schizophrenia, the author presents studies indicating that catatonia may be at least as common in bipolar disorder as it is in schizophrenia. He points out that changing definitions of schizophrenia and affective disorder require a reassessment of catatonia and its incorporation in modern diagnostic systems. The discussion represents material presented at the Affective Disorders Advisory Committee of the American Psychiatric Association Work Group to Revise DSM-III.


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Catatonic Schizophrenia

Catatonia is a psychomotor symptom in which patients present with stupor, although catatonic excitement may also present at the other end of the spectrum. Catatonia has been historically associated with schizophrenia although it is also associated with other neuropsychiatric disorders. Find the latest research on catatonic schizophrenia here.

Bipolar Disorder

Bipolar disorder is characterized by manic and/or depressive episodes and associated with uncommon shifts in mood, activity levels, and energy. Discover the latest research this illness here.


Catatonia is a psychomotor syndrome with motor and behavioral symptoms, and can occur in both patients with or without psychiatric illness. Discover the latest research on Catatonia here.