📖 Source: Stewart WF, Lipton RB, Dowson AJ, Sawyer J. Development and testing of the Migraine Disability Assessment (MIDAS) questionnaire. Neurology. 2001;56(6 Suppl 1):S20-S28. | Self-report · 5 items · lost days over 3 months · grades I (0–5) to IV (≥21)
MIDAS 偏头痛失能评估 = 5 个问题（工作日/家务/社交/娱乐等缺失天数）之和；≤5 I 级极少、≤10 II 级轻度、≤20 III 级中度、>20 IV 级重度失能。