The Mood Disorder Questionnaire (MDQ) Is A 13-Item Checklist Developed By Robert M.A. Hirschfeld, M.D. The MDQ Serves As An Effective Instrument For Screening Patients Who Have A History Of A Manic Episode Associated With Bipolar Disorder. The MDQ Addresses: Manic Symptoms Patients May Have Had Number Of Symptoms Present At Any One Time Clinically Significant Distress/Impairment Across Multiple Areas Of Functioning This Brief, Easy-To-Use Screening Instrument Has Been Validated As Having Good Sensitivity.