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Table 16 Diagnostic criteria for medication overuse headache [2]

From: Reference programme: diagnosis and treatment of headache disorders and facial pain. Danish Headache Society, 3rd edition, 2020

A. Headache occurring on ≥15 days/month in a patient with a pre-existing headache disorder
B. Regular overuse for > 3 months of one or more drugs that can be taken for acute and/or symptomatic treatment of headache:
 1. Simple analgesics (paracetamol or NSAIDs) for ≥15 days/month
 2. Ergotamines, triptans, opioids, combination analgesics or any combination of the above mentioned ≥10 days/month
C. Not better accounted for by another ICHD-3 diagnosis.