Bagatin Ediléia, Timpano Denise Lourenço, Guadanhim Lilia Ramos dos Santos, Nogueira Vanessa Mussupapo Andraus, Terzian Luiz Roberto, Steiner Denise, Florez Mercedes
Universidade Federal de São Paulo, São Paulo, SP, Brazil.
Universidade de Mogi das Cruzes, Mogi das Cruzes, SP, Brazil.
An Bras Dermatol. 2014 May-Jun;89(3):428-35. doi: 10.1590/abd1806-4841.20142100.
Acne is a common disease in adolescents, but there are no epidemiological data for acne in Brazil.
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.
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.
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 acne. The most prevalent form of acne was comedonal (61.1%), followed by mild (30.6%) and moderate (7.6%) papular-pustular, which affected mostly the face (97.5%). About half of the adolescents reported family history for acne in mother or father, and 20.6% reported previous treatment for acne. There was a higher chance of presenting non-comedonal acne with increased age (p<0.001).
The prevalence of acne in adolescents varies widely due to the clinical features and diagnostic methods used. Adolescents whose brothers/sisters had acne (OR=1.7-p=0.027) and those over 13 (OR=8.3-p<0.001), were more likely to have non-comedonal acne.
This study showed high prevalence of acne in adolescents from Sao Paulo, predominantly the comedonal form on the face, with a higher chance of presenting non-comedonal acne with increased age.
痤疮是青少年中的一种常见疾病，但巴西尚无痤疮的流行病学数据。
评估圣保罗青少年痤疮的患病率和严重程度，并研究与该疾病相关的社会人口学因素、家族史和生活方式。
对452名年龄在10至17岁（平均13.3岁）的青少年进行横断面研究，这些青少年来自小学和高中，由3名独立评估人员进行检查。
62.4%为女性，85.8%为白人，6.4%年龄为14岁。患病率为96.0%，且随年龄增长而增加——所有14岁以上的学生都患有痤疮。最常见的痤疮类型是粉刺型（61.1%），其次是轻度丘疹脓疱型（30.6%）和中度丘疹脓疱型（7.6%），主要影响面部（97.5%）。约一半的青少年报告其母亲或父亲有痤疮家族史，20.6%的青少年报告曾接受过痤疮治疗。随着年龄增长，出现非粉刺型痤疮的几率更高（p<0.001）。
由于所使用的临床特征和诊断方法不同，青少年痤疮的患病率差异很大。兄弟姐妹患有痤疮的青少年（比值比=1.7，p=0.027）以及13岁以上的青少年（比值比=8.3，p<0.001）更有可能患有非粉刺型痤疮。
本研究表明，圣保罗青少年痤疮患病率很高，主要为面部粉刺型，随着年龄增长出现非粉刺型痤疮的几率更高。
