The Mood Disorder Questionnaire (MDQ) screens for bipolar spectrum disorders using 13 yes/no questions about mood-related experiences. A positive screen requires 7+ yes answers that occurred at the same time AND caused at least moderate problems. This tool is for educational screening only — not a diagnosis.
Part 2: Timing & Impact
How to Interpret MDQ Results
The MDQ was designed to identify people in the community who may have bipolar disorder, many of whom are misdiagnosed or untreated. Bipolar disorder is often first diagnosed as depression because people typically seek help during depressive episodes, not manic ones.
Three-Part Criteria for a Positive Screen
1. Seven or more "Yes" answers to the symptom questions. 2. Several of those symptoms occurred during the same time period. 3. The symptoms caused at least moderate problems in work, home, relationships, finances, or legal situations. All three criteria must be met for a positive screen.
What to Do with a Positive Screen
A positive MDQ is not a diagnosis. It is a signal that further evaluation by a psychiatrist or psychologist is warranted. Bipolar disorder is highly treatable with medication and psychotherapy. Early diagnosis and treatment significantly improves outcomes.
Frequently Asked Questions
Is this MDQ screener free?
Yes, completely free with no signup required. All responses stay in your browser.
Is my data private?
Yes, all responses are processed entirely in your browser. Nothing is stored or transmitted.
What is the MDQ?
The Mood Disorder Questionnaire (MDQ) is a validated self-report screening tool developed by Dr. Robert Hirschfeld to identify people who may have bipolar disorder. It was developed based on DSM-IV criteria and validated in clinical and community samples.
What MDQ score indicates possible bipolar disorder?
A positive MDQ screen requires all three conditions: (1) 7 or more 'Yes' answers to the 13 symptom questions, (2) several symptoms occurred at the same time, and (3) symptoms caused at least moderate problems. The MDQ has sensitivity of 73% and specificity of 90% for bipolar I disorder.
Can the MDQ diagnose bipolar disorder?
No. The MDQ is a screening tool only. A diagnosis of bipolar disorder requires a comprehensive clinical evaluation by a qualified mental health professional, including a detailed history of mood episodes, duration, and impact on functioning.
What is the difference between bipolar I, bipolar II, and cyclothymia?
Bipolar I involves full manic episodes lasting at least 7 days or requiring hospitalization. Bipolar II involves hypomanic episodes (less severe) and major depressive episodes without full mania. Cyclothymia involves multiple periods of hypomanic and depressive symptoms that don't fully meet criteria for either. The MDQ screens for the spectrum rather than individual subtypes.