Is atopy in early childhood a risk factor for ADHD and ASD? a longitudinal study

J Psychosom Res. 2014 Oct;77(4):316-21. doi: 10.1016/j.jpsychores.2014.06.006. Epub 2014 Jun 21.

Abstract

Objective: Previous studies have found a temporal concordance in the increased prevalence of atopic diathesis/atopic diseases, attention-deficit hyperactivity disorder (ADHD), and autistic spectrum disorder (ASD) worldwide. But, the temporal association among these 3 distinct diseases is unknown.

Method: 14,812 atopic subjects diagnosed with any atopic disease (asthma, atopic dermatitis, allergic rhinitis, or allergic conjunctivitis) before the age of 3 (atopic cohort) and 6944 non-atopic subjects with no lifetime atopic disease (non-atopic cohort), born between 1997 and 2000, were enrolled and followed to December 31, 2010 to identify the development of ADHD and ASD.

Results: The presence of any atopic disease in early childhood increased the risk of developing ADHD (hazard ratio [HR]: 1.97) and ASD (HR: 3.40) in later life. Greater numbers of atopic comorbidities (4 comorbidities: ADHD: HR: 2.53; ASD: HR: 4.29) were significantly related to a greater risk of developing ADHD and ASD.

Discussion: Atopic diathesis in early childhood elevated the risk of developing ADHD and ASD in later life, with the dose-dependent relationship of more atopic comorbidities with a greater likelihood of ADHD and ASD.

Keywords: ADHD; ASD; Atopy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adolescent
  • Asthma / epidemiology
  • Asthma / psychology
  • Attention Deficit Disorder with Hyperactivity / epidemiology*
  • Attention Deficit Disorder with Hyperactivity / immunology*
  • Child
  • Child, Preschool
  • Comorbidity
  • Conjunctivitis, Allergic / epidemiology
  • Conjunctivitis, Allergic / psychology
  • Dermatitis, Atopic / epidemiology
  • Dermatitis, Atopic / psychology
  • Female
  • Humans
  • Hypersensitivity / epidemiology*
  • Hypersensitivity / psychology*
  • Longitudinal Studies
  • Male
  • Prevalence
  • Rhinitis, Allergic, Perennial / epidemiology
  • Rhinitis, Allergic, Perennial / psychology
  • Risk Factors