[The problem of headache].
D003937:Diagnosis, Differential; D004876:Ergot Alkaloids / Q000627:therapeutic use*; D006261:Headache / Q000175:diagnosis*; D006801:Humans; D008881:Migraine Disorders / Q000175:diagnosis* / Q000188:drug therapy
D004876:Ergot Alkaloids
Das Kopfschmerzproblem.