Medication Overuse Headache

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Diagnostic criteria (ICHD-3)
A. Headache occurring on โ‰ฅ15 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
C. Not better accounted for by another ICHD-3 diagnosis