Acne vulgaris: prevalence and clinical forms in adolescents from São Paulo, Brazil

BACKGROUND:Acne is a common disease in adolescents, but there are no epidemiological data for acne in Brazil.OBJECTIVES:To estimate the prevalence and degree of acne in adolescents from Sao Paulo and study socio-demographic factors, family history and lifestyle, associated with the disease.METHODS:Cross-sectional study with 452 adolescents aged between 10 and 17 (mean=13.3 years), students from elementary and high school, examined by 3 independent evaluators.RESULTS:62.4% were female, 85.8% white and 6.4% were aged 14. The prevalence was 96.0% and increased with age - all students over 14 had ...