title: The frequency of common skin conditions in preschool-aged children in Australia: seborrheic dermatitis and pityriasis capitis (cradle cap).
abstract: OBJECTIVE
  To determine the prevalence and severity of seborrheic dermatitis and pityriasis capitis in Australian preschool-aged children.
  
  
  METHODS
  A stratified cross-sectional skin survey using cluster sampling of centers throughout Victoria, Australia.
  
  
  METHODS
  The study population included children attending child care centers, preschools, and Maternal and Child Health Centers, with the reference population being Australian children 5 years and younger.
  
  
  METHODS
  Of the 1,634 children in the original sample, 1.116 children aged 11 days to 5 years 11 months were included in the study.
  
  
  METHODS
  Parents completed a questionnaire recording demographic information and personal and family history of skin problems and related diseases. A dermatologist performed a total skin examination, including the diaper area for children younger than 12 months.
  
  
  METHODS
  The age- and sex-specific prevalence rates and site and severity of seborrheic dermatitis and pityriasis capitis were measured.
  
  
  RESULTS
  The overall age- and sex-adjusted prevalence of seborrheic dermatitis was 10.0% (95% confidence interval [CI], 8.2%-11.7%): 10.4% (95% CI, 7.8%-12.9%) in boys and 9.5% (95% CI, 7.0%-12.0%) in girls. This was highest in the first 3 months of life, decreasing rapidly by the age of 1 year, after which it slowly decreased over the next 4 years. Most (71.9%) had disease classified as minimal to mild. Pityriasis capitis occurred in 41.7% (95% CI, 38.8%-44.6%) of the 1,116 children examined, with 85.8% categorized as minimal to mild only.
  
  
  CONCLUSIONS
  Seborrheic dermatitis and pityriasis capitis are common in early childhood. Most children have minimal to mild disease that would require little if any treatment. Education programs directed at those caring for preschool-aged children are needed to provide information on simple preventative measures and treatment, if necessary, that could easily reduce the morbidity associated with these very common conditions.
authors.affiliation: Department of Medicine (Dermatology), The University of Melbourne, St Vincent's Hospital Melbourne, PO Box 2900, Fitzroy, Victoria 3065, Australia. foleyp@svhm.org.au
authors.forename: Peter
authors.initials: P
authors.lastname: Foley
authors.forename: Yeqin
authors.initials: Y
authors.lastname: Zuo
authors.forename: Anne
authors.initials: A
authors.lastname: Plunkett
authors.forename: Kate
authors.initials: K
authors.lastname: Merlin
authors.forename: Robin
authors.initials: R
authors.lastname: Marks
mesh_terms: D017677:Age Distribution; D002675:Child, Preschool; D003430:Cross-Sectional Studies; D012628:Dermatitis, Seborrheic / Q000453:epidemiology* / Q000209:etiology / Q000473:pathology; D003963:Diaper Rash / Q000453:epidemiology / Q000209:etiology / Q000473:pathology; D005121:Extremities; D005148:Facial Dermatoses / Q000453:epidemiology / Q000209:etiology / Q000473:pathology; D005260:Female; D006266:Health Education; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D010915:Pityriasis / Q000453:epidemiology* / Q000209:etiology / Q000473:pathology; D015995:Prevalence; D012536:Scalp Dermatoses / Q000453:epidemiology / Q000209:etiology / Q000473:pathology; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D014739:Victoria / Q000453:epidemiology