Role of Personality and Stress in the Genesis of Bipolar Disorder - Mixed States: "Could it be a solution to the Diagnostic confusion prevailing in this disorder? (Part II)" .

ABSTRACT

Role of temperamental predisposition in the development of Mixed States is a relevant factor. Mania seems to arise from a hyperthymic background and Mixed States seems to arise from a depressive disposition. Aims: To compare the personality pathology and distribution of stress of patients of mixed states distributed according to the number of standardized criteria fulfilled and with the pure manic group. Materials and methods: Out of 214 bipolar disorder- current episode manic patients diagnosed as per DSM IV TR ,admitted in psychiatry ward of P.B.M. Hospital, Bikaner from 1st Jan 2007 to 31st Dec 2007,64 patients were randomly selected. Young’s Mania Rating Scale and Montgomery Asberg Depression Rating Scale were applied to these patients and 32 patients were assigned to mixed states on displaying one or more depressive symptom on MADRS, excluding decreased sleep. Rest 32 patient were assigned to pure manic group displaying no depressive symptoms. Presumptive Stressful Life Event Scale was applied to find out any stress in the lifestyle of the sample and International Personality Disorder Examination was applied on the third follow up visit. Results: Patients with personality psychopathology and stress met 3 or more criteria as compared to those with personality psychopathology without stress (p<0.01). Disorder level personality psychopathology, especially anxious disorder level personality, was significantly higher in mixed group patients as compared to pure manic patients(p<0.02).Meeting more criteria for mixed mania also meant higher scores on MADRS(p<0.01) Also patients meeting more than 3 criteria for mixed states had a significantly higher duration of hospital stay than those meeting less than 3 criteria(p<0.02) Conclusion: Mixed states is a dimensional diagnosis, higher the vulnerability in terms of disorder level personality psychopathology higher is the MADRS scores and greater episode duration.