Table 4 Diagnostic criteria for CM according to S-L, ICHD-3β and EO criteria
From: Field testing of the ICHD-3β and expert opinion criteria for chronic migraine
S-L | ICHD-3β | EO |
|---|---|---|
A. Daily or almost daily (>15 days a month) head pain for >1 month | A. Headache on ≥15 days per month for at least 3 months | A. Headache on ≥15 days per month for at least 3 months |
B. Average headache duration of >4 h a day (if untreated) | B. Occurring in a patient who has had at least 5 attacks fulfilling criteria for 1.1 Migraine without aura and/or 1.2 migraine with aura | B. On ≥8 days per month on average ≥4 hours/day for at least 3 months, 1 or more of the following criteria were fulfilled 1. Criteria C and D for 1.1 migraine without aura 2. Criteria B and C for 1.2 migraine with aura 3. Criteria A and B for 1.5 probable migraine |
C. At least one of the following: 1. History of episodic migraine meeting any HIS criteria 1.1-1.6 2. History of increasing headache frequency with deceasing severity of migrainous features over at least 3 months 3. Headache at some time meets HIS criteria for migraine 1.1-1.6 other than duration | C. On ≥8 days per month for at least 3 months, one or more of the following criteria were fulfilled 1. Criteria C and D for 1.1 migraine without aura 2. Criteria B and C for 1.2 migraine with aura 3. Believed by the patient to be migraine at onset and relieved by a triptan or ergot derivative | C. Not better accounted for by another ICHD-3 diagnosis |
D. Dose not meet criteria for new daily persistent headache (4.7) or hemicrania compounds continua (4.8) | D. Not better accounted for by another ICHD-3 diagnosis. | D. Does not meet criteria for new daily persistent headache (4.7) or hemicrania continua (4.8) |