MDQ

Could it be bipolar disorder?

The Mood Disorder Questionnaire (MDQ) is a 13-item screening tool developed by Hirschfeld and colleagues to identify symptoms of bipolar spectrum disorders in adults. Each question asks about a period of time in your life when you were not your usual self. A score of 7 or more "Yes" answers indicates a positive screen warranting further professional evaluation. The MDQ is widely used in primary care and research settings.

⏱ 5 min ❓ 13 questions ✓ 100% Free
▶ Start Free Test
🔒 No sign-up · Instant results · Science-based · Secure payment
🔬 Bipolar Screening (MDQ)
▶ Start Test Now
Download sample PDF →
⚠️ Disclaimer: Based on the Mood Disorder Questionnaire (Hirschfeld et al., 2000). Educational screening purposes only - not a medical diagnosis. A positive screen does not confirm bipolar disorder; many other conditions can produce similar symptoms. Please consult a qualified mental health professional for any clinical concerns.
Claude AI
AI Interpretation powered by Claude (Anthropic)
claude-sonnet-4-20250514
Your results are analyzed by Claude, Anthropic's AI model, which provides a personalized narrative explaining what your answers reveal about your profile, with practical recommendations and professional guidance.

📋 What to expect

Answer honestly There are no right or wrong answers
Take your time Read each question carefully before answering
AI interpretation Claude AI will analyze and explain your results
PDF Report Get a full PDF report of your results

What is the MDQ questionnaire?

The MDQ (Mood Disorder Questionnaire), developed by Hirschfeld, is a screening tool for the bipolar spectrum. It focuses on periods when mood becomes unusually elevated, expansive or irritable, alongside extra energy, reduced sleep and increased activity. It aims to spot these phases that are sometimes mistaken for simply a good stretch.

Why it matters

Bipolar disorder is often mistaken for depression, because people usually seek help during the low phases. Spotting possible high phases is essential for the right support. Telling apart the highs and lows of mood also helps you understand yourself better day to day, at work and in relationships.

About this test

This test is free, fast and anonymous. It is a screening tool, not a diagnosis: only a health professional can confirm a mood disorder. If your mood swings worry you or disrupt your life, please talk with a doctor or a psychiatrist.