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Table 18 Grading of HALT-90a

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)

  1. aFollowing the grading of MIDAS [7]