Key clinical point: Childhood body mass index (BMI) is positively associated with the risk of developing hidradenitis suppurativa (HS) in adulthood.

Major finding: Both the lightest (2.00-2.75 kg; hazard ratio [HR], 1.36; 95% confidence interval [CI], 1.10-1.68) and the heaviest babies at birth (4.26-5.50 kg; HR, 1.39; 95% CI, 1.01-1.93) had an increased risk of developing HS vs. normal-weight babies (3.26-3.75 kg). Children with overweight at 7 years of age but with normal weight at 13 years of age reduced the risk of HS development in adulthood (HR, 1.05; 95% CI, 0.67-1.67).

Study details: The data come from a cohort study of 347,200 Danish children born between 1930 and 1996; the follow-up period was from 1977 to 2017.

Disclosures: This study is supported in part by a grant from the Novo Nordisk Foundation. The authors declared no conflicts of interest.