A. Headache fulfilling criteria for 8.2 Medication-overuse headache
B. Regular intake of ergotamine on ≥10 days per month for >3 months.
Bioavailability of ergots is so variable that a minimum dose cannot be defined.
A patient who fulfils the criteria for 8.2.1 Ergotamine-overuse headache and has regularly used or overused other drug(s) for the acute or symptomatic treatment of headache for more than three months should be given all other applicable codes.