Atopic dermatitis linked to higher ADHD risk in children, with sleep disturbance emerging as key factor

Children and adolescents with atopic dermatitis (AD) have an increased risk of attention-deficit/hyperactivity disorder (ADHD), although emerging evidence suggests that chronic itching and sleep disruption may account for some of the association rather than a direct causal relationship between the conditions, according to a narrative review published in Pediatric Investigation.

The review by Zhao and colleagues examined epidemiologic evidence, potential mechanisms, and clinical management of AD and ADHD comorbidity in pediatric patients. The investigators searched PubMed from inception through March 2026 and included systematic reviews and meta-analyses, observational studies, Mendelian randomization studies, and preclinical mechanistic research. Because the analysis was a narrative review, the investigators did not conduct a formal quality assessment or meta-analysis.

“Numerous studies have confirmed the comorbidity between childhood AD and ADHD; however, the strength, nature, and clinical significance of this association remain unclear,” the investigators wrote.

How strong is the association between AD and ADHD?

Two recent meta-analyses cited in the review reported similar associations between AD and ADHD, with odds ratios (ORs) of 1.34 (95% CI, 1.25-1.44) and 1.28 (95% CI, 1.18-1.40). One analysis found a stronger association among children aged 6 to 18 years (OR, 1.38; 95% CI, 1.28-1.48) than among children younger than 6 years (OR, 1.12; 95% CI, 1.07-1.17).

Disease severity may also influence risk. The review reported that ADHD prevalence was 15% among children with moderate AD and 16% among those with severe AD, compared with 7% among children with mild disease. However, the authors noted that another recent study found no significant relationship between AD severity and ADHD symptoms.

Sleep disturbance emerged as an important potential contributor. A meta-analysis found that patients with AD and sleep disturbances had increased odds of ADHD symptoms or diagnosis (OR, 2.43). Itching can interfere with sleep initiation and maintenance, contributing to daytime inattention, irritability, and hyperactivity.

Does atopic dermatitis cause ADHD?

Despite the observational associations, evidence does not establish that AD directly causes ADHD. A bidirectional Mendelian randomization analysis found no increased ADHD risk associated with genetically determined AD risk (OR, 1.02; 95% CI, 0.93-1.11).

The authors proposed an “inflammation–itch–neurobehavioral axis” in which AD-related inflammation drives chronic itching, which disrupts sleep and may impair attention and impulse control. Stress and itching may also reinforce inflammation, creating a cycle affecting both skin and behavior.

Importantly, the investigators distinguished diagnosed ADHD from ADHD-like behaviors associated with AD. Chronic itching, sleep fragmentation, and psychosocial stress can produce temporary attention and behavioral problems that may improve when AD is effectively treated.

What should pediatricians consider in clinical practice?

The authors recommended ADHD and behavioral screening for children with moderate-to-severe AD, AD beginning before age 5 years, or significant AD-related sleep disturbance. Standardized tools such as the Vanderbilt rating scales can be used alongside assessments of sleep and emotional health.

Management should prioritize control of skin inflammation and pruritus and address sleep disturbance and chronic stress. When independent ADHD is confirmed and causes impairment, treatment should follow established ADHD guidelines. Clinicians should also monitor sleep and skin symptoms when ADHD medications are started or adjusted.

The authors cautioned that most epidemiologic evidence is observational and much of the mechanistic evidence comes from animal models or adult studies. They concluded that the proposed inflammation–itch–neurobehavioral axis remains a hypothesis requiring prospective evaluation in pediatric populations.

Reference

Zhao Q, Liang Y, Liu Y, et al. Atopic dermatitis and attention-deficit/hyperactivity disorder comorbidity in children and adolescents: epidemiology, mechanisms, and clinical management. Pediatr Investig. Published online August 28, 2026. doi:10.1002/ped4.70083.