title: Prevalence of headache and its interference in the activities of daily living in female adolescent students.
abstract: OBJECTIVE
  To describe the prevalence of headache and its interference in the activities of daily living (ADL) in female adolescent students.
  
  
  METHODS
  This descriptive cross-sectional study enrolled 228 female adolescents from a public school in the city of Petrolina, Pernambuco, Northeast Brazil, aged ten to 19 years. A self-administered structured questionnaire about socio-demographic characteristics, occurrence of headache and its characteristics was employed. Headaches were classified according to the International Headache Society criteria. The chi-square test was used to verify possible associations, being significant p<0.05.
  
  
  RESULTS
  After the exclusion of 24 questionnaires that did not met the inclusion criteria, 204 questionnaires were analyzed. The mean age of the adolescents was 14.0±1.4 years. The prevalence of headache was 87.7%. Of the adolescents with headache, 0.5% presented migraine without pure menstrual aura; 6.7%, migraine without aura related to menstruation; 1.6%, non-menstrual migraine without aura; 11.7%, tension-type headache and 79.3%, other headaches. Significant associations were found between pain intensity and the following variables: absenteeism (p=0.001); interference in ADL (p<0.001); medication use (p<0.001); age (p=0.045) and seek for medical care (p<0.022).
  
  
  CONCLUSIONS
  The prevalence of headache in female adolescents observed in this study was high, with a negative impact in ADL and school attendance.
authors.affiliation: UPE, Petrolina, PE, Brasil.
authors.forename: Alaine Souza
authors.initials: AS
authors.lastname: Lima
authors.affiliation: UPE, Petrolina, PE, Brasil.
authors.forename: Rodrigo Cappato
authors.initials: RC
authors.lastname: de  Araújo
authors.affiliation: UPE, Petrolina, PE, Brasil.
authors.forename: Mayra Ruana de A
authors.initials: MR
authors.lastname: Gomes
authors.affiliation: UPE, Petrolina, PE, Brasil.
authors.forename: Ludmila Remígio
authors.initials: LR
authors.lastname: de  Almeida
authors.affiliation: UPE, Petrolina, PE, Brasil.
authors.forename: Gabriely Feitosa F
authors.initials: GF
authors.lastname: de  Souza
authors.affiliation: UPE, Petrolina, PE, Brasil.
authors.forename: Samara Barreto
authors.initials: SB
authors.lastname: Cunha
authors.affiliation: UPE, Petrolina, PE, Brasil.
authors.forename: Ana Carolina R
authors.initials: AC
authors.lastname: Pitangui
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D003430:Cross-Sectional Studies; D005260:Female; D006261:Headache / Q000453:epidemiology*; D006801:Humans; D015995:Prevalence; D013334:Students