title: Epidemiology and impact of headache: an overview.
abstract: Headache is one of the most common presenting complaints of patients in the practice of medicine. Frequently a symptom of numerous diseases, and frustratingly, the principle symptom of the primary headache syndromes, headache is experienced by 90% of the general population at some point in life.
authors.affiliation: Ryan Headache Center, Mercy Health Research, 1585 Woodlake Drive, Suite 200, St. Louis, MO 63017, USA. smittr@stlo.mercy.net
authors.forename: Timothy R
authors.initials: TR
authors.lastname: Smith
mesh_terms: D000700:Analgesics / Q000627:therapeutic use; D002908:Chronic Disease; D003937:Diagnosis, Differential; D006261:Headache / Q000188:drug therapy / Q000453:epidemiology* / Q000209:etiology; D020773:Headache Disorders / Q000188:drug therapy / Q000453:epidemiology* / Q000209:etiology; D006801:Humans; D008881:Migraine Disorders / Q000453:epidemiology; D017410:Practice Guidelines as Topic; D011320:Primary Health Care; D011788:Quality of Life; D012307:Risk Factors; D018781:Tension-Type Headache / Q000453:epidemiology; D014481:United States / Q000453:epidemiology
chemical_list: D000700:Analgesics