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Migraine Disability Grades and Levels Based on the MIDAS Score
| Grade | Disability Level | MIDAS Total Score Range |
|---|---|---|
| Grade I | Little or no disability | 0‐5 |
| Grade II | Mild disability | 6‐10 |
| Grade III | Moderate disability | 11‐20 |
| Grade IV‐A | Severe disability | 21‐40 |
| Grade IV‐B | Very severe disability | >40 |
MIDAS = Migraine Disability Assessment.
