- Meet DSM-IV criteria for premenstrual dysphoric disorder, confirmed by the Daily Record of Severity of Problems (DRSP; Endicott & Harrison) for 2 consecutive menstrual cycles (Phase 1). The DRSP is a self-rated symptom checklist, which requires individuals to rate their symptoms of PMDD according to the DSM-IV research criteria scale on a scale from 1 (symptom not present) to 6 (symptom extreme). During the last 7 days of the menstrual cycle compared to days 5-11, patients must have a 30% increase in their average (over 2 menstrual cycles) score for 5 of these 10 symptoms. Symptoms must be "not present" or "minimal" during the postmenstrual week.