Variations in risk of asthma and seasonal allergies between early- and late-onset pediatric atopic dermatitis: A cohort study

JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY

卷:77

Article

Wan, Joy^1,2  Mitra, Nandita²  Hoffstad, Ole J.²  Gelfand, Joel M.^1,2  Yan, Albert C.³  Margolis, David J.^1,2 

[1] Univ Penn, Sch Med, Dept Dermatol, Philadelphia, PA 19104 USA

[2] Univ Penn, Sch Med, Dept Biostat & Epidemiol, Philadelphia, PA 19104 USA

[3] Childrens Hosp Philadelphia, Dermatol Sect, Philadelphia, PA 19104 USA

关键词: allergic rhinitis;    asthma;    atopic dermatitis;    atopic march;    eczema;    epidemiology;    hay fever;    seasonal allergies;   

DOI  :  10.1016/j.jaad.2017.06.013

来源: Elsevier

【 摘 要 】

Background: Atopic dermatitis is associated with other allergic conditions, but variations in this atopic march'' are poorly understood. Objective: To determine the impact of the age of atopic dermatitis onset on the risk for asthma and seasonal allergies. Methods: A cohort study was performed using the Pediatric Eczema Elective Registry, which is an observational cohort of subjects with pediatric onset atopic dermatitis. Results: In total, 3966 children were included, and 73% reported atopic dermatitis onset before age 2 years. At baseline, subjects with atopic dermatitis onset at ages 3 to 7 or 8 to 17 years had significantly lower rates of seasonal allergies and asthma than those with onset before age 2. During follow-up, the adjusted relative risks for incident seasonal allergies were 0.82 (95% confidence interval, 0.72-0.91) and 0.64 (95% CI confidence interval, 0.47-0.83) in the 3-to 7- and 8- to 17-years-old at onset groups compared with the age 2 years or younger at onset group. The adjusted risk for incident asthma was not significantly different between the older onset groups and the earliest onset group. Limitations: Misclassification bias may arise from using self-reported onset age data. Conclusions: The timing of atopic dermatitis onset may explain part of the variation in the atopic march. These findings may improve future risk stratification of patients for treatment.

【 授权许可】

Free