The Mood Disorder Questionnaire (MDQ) was developed by a group of psychiatrists, researchers and patient advocates. It is simple and involves reporting against 15 items. It is a screening instrument for the detection of bipolar disorder (BPD).

The format consists of three questions:

The items are derived from both DSM-IV criteria and clinical experience.

The questionnaire is designed to be completed by the patient. It is easy to follow and consists of 14 questions with yes/no answers with the final question providing four options about the extent of problems caused by the symptoms. It has been estimated to take less than 5 min to complete.

In order to screen positively for BPD, all three of the following criteria should be met:

If all criteria are...

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