MIDAS

The Migraine Disability Assessment (MIDAS) questionnaire is a 5-item self-report instrument developed by Walter Stewart and Richard Lipton to quantify headache-related disability over the preceding three months. It counts the number of days with reduced activity across three domains: work or school, household work, and social or leisure activities. Total scores represent lost days, with Grade I (0–5 days) indicating minimal disability through Grade IV (21+ days) indicating severe disability. Two supplementary questions capture headache frequency and average pain intensity. The MIDAS is used in psychedelic headache research alongside the HIT-6 to measure functional impact of cluster headache and migraine. It is simple, validated across multiple cultures, and recommended by the International Headache Society for clinical trials and epidemiological studies.