title: Polymorphic light eruption: prevalence in Australia and England.
abstract: The prevalence and clinical characteristics of polymorphic light eruption were assessed by a questionnaire survey of 172, 196 and 182 subjects in Perth, Ballarat and London, respectively. The prevalence was 5.2% in Perth (latitude 32 degrees), 3.6% in Ballarat (37.5 degrees) and 14.8% in London (51.5 degrees). The age distribution (mostly first three decades) and male:female ratio (1:3) was similar for affected individuals in all three areas. Development of tolerance during the summer was more common in Perth (66.7%) and Ballarat (71.4%) than in London (40.7%).
authors.affiliation: Department of Photobiology, Institute of Dermatology, St John's Dermatology Centre, St Thomas' Hospital, London, U.K.
authors.forename: C
authors.initials: C
authors.lastname: Pao
authors.forename: P G
authors.initials: PG
authors.lastname: Norris
authors.forename: M
authors.initials: M
authors.lastname: Corbett
authors.forename: J L
authors.initials: JL
authors.lastname: Hawk
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D001315:Australia / Q000453:epidemiology; D002648:Child; D002980:Climate; D017454:Dermatitis, Photoallergic / Q000453:epidemiology* / Q000517:prevention & control; D004739:England / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D017678:Sex Distribution; D013473:Sunscreening Agents / Q000627:therapeutic use; D011795:Surveys and Questionnaires; D014466:Ultraviolet Rays / Q000009:adverse effects
chemical_list: D013473:Sunscreening Agents