title: Presentation and management of acne in primary care: a retrospective cohort study.
abstract: BACKGROUND
  Acne is the most common skin disorder in young people, affecting up to 80% of teenagers.
  
  
  OBJECTIVE
  To ascertain the incidence, prevalence, demographic distribution and severity of acne in primary care and to document the management of these patients for a two-year period after presentation.
  
  
  METHODS
  Retrospective cohort study using data from the medical records of 798 patients who had been treated for acne during a one-year identification period.
  
  
  METHODS
  Fourteen general practices in a mixed urban area in north-east England.
  
  
  METHODS
  Patients aged 13 to 25 years who had acne were identified from computerised practice medical records using diagnostic codes and medication records. The medical records of these patients were then hand-searched for data for two years after presentation.
  
  
  RESULTS
  Data were collected for 798 patients from 14 practices. The prevalence of acne in 13- to 25-year-olds was 3.1%, and the incidence was 1.6%. The ratio of male to female patients with acne was 1:1.02. Median age at presentation was 15 years for male subjects and 16 years for female subjects. Recording of site and severity was rare (18.3%). In total, 55% of patients had two or more different prescriptions for acne, 21% of patients had six or more consultations during the two-year follow-up period, and 8.5% were referred to a dermatologist.
  
  
  CONCLUSIONS
  Given previous estimates of community prevalence, it is clear that the majority of young people with acne do not present to primary care. These findings have implications for the provision of effective and appropriate health care for young people with acne.
authors.affiliation: Department of Primary Health Care, University of Newcastle, Framlington Place, Newcastle upon Tyne NE2 4HH. drsarahpurdy@hotmail.com
authors.forename: Sarah
authors.initials: S
authors.lastname: Purdy
authors.forename: Joy
authors.initials: J
authors.lastname: Langston
authors.forename: Lisa
authors.initials: L
authors.lastname: Tait
mesh_terms: D000152:Acne Vulgaris / Q000453:epidemiology* / Q000628:therapy; D000293:Adolescent; D000328:Adult; D000900:Anti-Bacterial Agents / Q000008:administration & dosage*; D015331:Cohort Studies; D004739:England / Q000453:epidemiology; D005194:Family Practice; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D012189:Retrospective Studies; D014504:Urban Health
chemical_list: D000900:Anti-Bacterial Agents