From: Aids to management of headache disorders in primary care (2nd edition)
Days lost in last 3 months | Assessed impact | Grade (indicating increasing need for medical care) |
---|---|---|
0–5 | Minimal or infrequent | I |
6–10 | Mild or infrequent | II |
11–20 | Moderate | III (indicates high need for care) |
≥20 | Severe | IV (indicates high need for care) |