Chronic migraine: medication overuse headache.
Rothrock
John F
JF
D000700:Analgesics / Q000009:adverse effects* / Q000627:therapeutic use*; D051271:Headache Disorders, Secondary / Q000209:etiology*; D006801:Humans; D008881:Migraine Disorders / Q000188:drug therapy*
D000700:Analgesics