title: TCD and headache.
authors.forename: N M
authors.initials: NM
authors.lastname: Ramadan
mesh_terms: D001783:Blood Flow Velocity; D002560:Cerebrovascular Circulation; D006261:Headache / Q000000981:diagnostic imaging* / Q000209:etiology / Q000503:physiopathology; D006801:Humans; D008881:Migraine Disorders / Q000503:physiopathology; D009119:Muscle Contraction; D014463:Ultrasonography