Thyroid Diseases in a Cohort of Finnish Patients with Hidradenitis Suppurativa.

INTRODUCTION

The association between thyroid disorders (hyperthyroidism or hypothyroidism) and hidradenitis suppurativa is controversial. Our study aimed to determine the phenotype and comorbidities of HS patients with thyroid disorders.

METHODS

A retrospective study was conducted in the department of dermatology, Helsinki University Hospital, Finland, and included all the attending patients with HS diagnosis in 2018.

RESULTS

A total of 167 patients were included (97 women). The prevalence of thyroid disorders was 12% and of hypothyroidism 10.7%. Patients with thyroid disorders were more likely to have a BMI ≥25 (p = 0.016), asthma (p = 0.034) and to be nonsmoker (p = 0.018) or ex-smoker (p = 0.017). Binary logistic regression showed that only asthma and nonsmoking were associated with thyroid disorders or hypothyroidism among patients with HS.

CONCLUSION

Our study is in line with previous ones that showed the association of HS and thyroid disorders in nonsmokers. Asthma may be simply an association with thyroid disorders and unrelated to HS as such.