title: Frequency of types of headache in the tertiary care center of the Hospital das Clínicas of the Universidade Federal de Minas Gerais, MG, Brazil.
abstract: To assess the frequency of different diagnoses of headaches in the Headache Outpatient Clinic of the Hospital das Clínicas of the Universidade Federal de Minas Gerais (AmbCef-UFMG).
  
  
  
  Cross sectional study with 289 patients consecutively attended to at AmbCef-UFMG. Headaches were diagnosed based on the criteria established by the International Classification of Headache Disorders (ICDH-2004).
  
  
  
  The average age of patients was 42.6 years, mostly women (86.9%) with less than nine years of education. Primary headaches were the most common type, with migraine found in 79.8% of cases, and tension-type headache (TTH) in 20.4%. Among the secondary types, the most common was headache caused by overuse of analgesics (16.6%), followed by less common types, such as idiopathic intracranial hypertension. Chronic daily headache (CDH) was found in 31.8% of cases.
  
  
  
  This study confirms literature data showing migraine as the most common headache in tertiary care centers. The expressive number of cases of CDH and headaches caused by overuse of analgesics indicates that, starting at the primary care level, patients should be advised to avoid the abuse of symptomatic drugs.
authors.affiliation: Department of Neurology, Hospital das Clínicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil. juniorariovaldo@uol.com.br
authors.forename: Ariovaldo Alberto da
authors.initials: AA
authors.lastname: Silva
authors.forename: Rafael Mattos
authors.initials: RM
authors.lastname: Tavares
authors.forename: Rodrigo Pinto
authors.initials: RP
authors.lastname: Lara
authors.forename: Bruno Engler
authors.initials: BE
authors.lastname: Faleiros
authors.forename: Rodrigo Santiago
authors.initials: RS
authors.lastname: Gomez
authors.forename: Antônio Lúcio
authors.initials: AL
authors.lastname: Teixeira
mesh_terms: D000328:Adult; D000554:Ambulatory Care Facilities; D001938:Brazil / Q000453:epidemiology; D003430:Cross-Sectional Studies; D003937:Diagnosis, Differential; D005260:Female; D020773:Headache Disorders / Q000175:diagnosis* / Q000453:epidemiology; D051271:Headache Disorders, Secondary / Q000175:diagnosis / Q000453:epidemiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D008881:Migraine Disorders / Q000175:diagnosis / Q000453:epidemiology; D018781:Tension-Type Headache / Q000175:diagnosis / Q000453:epidemiology; D062606:Tertiary Care Centers / Q000706:statistics & numerical data; D055815:Young Adult