Definition of migraine: International Headache Society (IHS) 2018 (after).
Migraine without aura | |
A | At least 5 attacks that satisfy B-D |
B | Headache attacks last (untreated or unsuccessfully treated) 4-72 h |
C | At least 2 of the following characteristics:
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D | At least 1 of the following accompanying symptoms: |
E | Not better explained by another ICHD-3 diagnosis. |
Migraine with aura | |
A | At least 2 attacks that satisfy B and C |
B | At least 1 of the following fully reversible aura symptoms:
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C | At least 3 of the following 6 characteristics:
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D | Not better explained by another ICHD-3 diagnosis. |
Chronic migraine | |
A | Headache (tension headache and/or migraine-like) on ≥ 15 days/month for >3 months that meets criteria B and C. |
B | Occur in a patient who has had at least five attacks that meet criteria B-D for 1.1 Migraine without aura and/or criteria B and C for 1.2 Migraine with aura |
C |
At least one is met on ≥ 8 days/month for >3 months:
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D | Not better explained by another ICHD-3 diagnosis. |