Hidradenitis suppurativa epidemiology: from the first Italian registry in 2009 to the most recent epidemiology updates – Italian Registry Hidradenitis Suppurativa project 2

Background The incidence of hidradenitis suppurativa ( HS ) is still not fully established with only a few studies reporting its estimates. Prevalence estimates range from 5:10 000 to 4:100. These extremely large variations could be explained by a combination of factors, including different selection procedures, different diagnostic criteria, and variations in the sex and age distribution of the examined samples. Objectives To analyze variations...