title: Trends in Ambulatory Health Care Usage for Adult Acne.
abstract: BACKGROUND
  The prevalence of acne is increasing among young children but not well characterized in older patients.
  
  
  OBJECTIVE
  To determine whether ambulatory health care for adult acne is increasing and whether the average age of adult acne patients seeking care has been increasing over time.
  
  
  METHODS
  We performed a retrospective analysis of data from the 1993-2010 National Ambulatory Medical Care Survey for acne visits in ages 25 and older.
  
  
  RESULTS
  Average age of adult acne patients increased by 0.13 years per year over the study period. Visits per 100,000 population declined in the 25 to 34 age group (P=.05) and did not change significantly in the 35 to 44 and 45 and older age groups.
  
  
  CONCLUSIONS
  The hypothesis that adult acne visits are increasing was not supported, but the average age of adult acne patients seeking care has been rising.
authors.affiliation: Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA scdavis@wakehealth.edu.
authors.forename: Scott A
authors.initials: SA
authors.lastname: Davis
authors.affiliation: Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: Karen E
authors.initials: KE
authors.lastname: Huang
authors.affiliation: Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA Department of Pathology, Wake Forest School of Medicine, Winston-Salem, NC, USA Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: Steven R
authors.initials: SR
authors.lastname: Feldman
authors.affiliation: Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: Alan B
authors.initials: AB
authors.lastname: Fleischer
authors.affiliation: Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, NC, USA.
authors.forename: William W
authors.initials: WW
authors.lastname: Huang
mesh_terms: D000152:Acne Vulgaris / Q000628:therapy*; D000328:Adult; D000553:Ambulatory Care / Q000639:trends*; D005260:Female; D019538:Health Care Surveys; D006801:Humans; D008297:Male; D008875:Middle Aged; D010342:Patient Acceptance of Health Care; D012189:Retrospective Studies
keywords: NAMCS; age; female; health care resources; middle age; prevalence