Supplementary Material for: Hidradenitis Suppurativa in a Large Cohort of Italian Patients: Evaluation of the Burden of Disease

Background: Hidradenitis suppurativa (HS) is a chronic, inflammatory, recurrent, debilitating skin disease of the hair follicle that usually occurs after puberty with painful, deep-seated, inflamed nodules and sinus tracts in the apocrine gland-bearing areas of the body, most commonly the axillae and inguinal and anogenital regions, with a relevant impact on patients’ quality of life (QoL). Objective: To evaluate how the burden of HS disease impacts on patient well-being and working activities in a large Italian population over a period of 9 months. Methods: A multicenter, prospective, epidemiologic cohort study was conducted in adult Italian patients with HS. HS severity was assessed throu…