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Differential DSM-III Psychiatric Disorder Prevalence Profiles in Dystonia and Parkinson’s Disease

Received September 4, 2002; revised March 21, 2003; accepted April 15, 2003. From the Departments of Psychiatry & Behavioral Sciences, Internal Medicine (Neurology), and Radiology, and Family Medicine and Community Medicine of Mercer University School of Medicine, Macon, Georgia, and the Department of Neurology, Emory University School of Medicine, Atlanta, Georgia. Address correspondence to Dr. Lauterbach, Chief, Division of Adult & Geriatric Psychiatry, Department of Psychiatry & Behavioral Sciences, Mercer University School of Medicine, 655 First Street, Macon, GA 31201; eclbgnp{at}earthlink.net (E-mail).

The authors investigated the prevalence of DIS-ascertained DSM-III psychiatric disorders occurring in 28 patients with dystonia and 28 patients with Parkinson’s Disease (PD). In patients with dystonia, lifetime prevalences of major depression (25.0%), bipolar disorder (7.1%), atypical bipolar disorder (7.1%), social phobia (17.9%), and generalized anxiety disorder (25.0%) were significantly more common than in epidemiologic catchment area (ECA) study population controls (p < 0.005). Social phobia and generalized anxiety disorder preceded dystonia (primary), while bipolar disorder developed after dystonia onset (secondary). In PD patients, the lifetime prevalence of simple phobia (35.7%, p < 0.0001) and atypical depression (21.4%) were significantly more common. Parkinson’s Disease was associated with primary simple phobia and secondary atypical depression. These findings are considered in light of previous results and in terms of the differences in pallidothalamic physiologies in dystonia and PD. These data suggest distinctive profiles of psychiatric disorders in dystonia and PD.

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