title: Evidence-based understanding of medication-overuse headache: clinical implications--a comment.
authors.forename: Gunther
authors.initials: G
authors.lastname: Haag
mesh_terms: D000700:Analgesics / Q000009:adverse effects*; D002110:Caffeine / Q000009:adverse effects; D000697:Central Nervous System Stimulants / Q000009:adverse effects; D019317:Evidence-Based Medicine; D051271:Headache Disorders, Secondary / Q000209:etiology* / Q000503:physiopathology*; D006801:Humans
chemical_list: D000700:Analgesics; D000697:Central Nervous System Stimulants; D002110:Caffeine