Identification of three hidradenitis suppurativa phenotypes: latent class analysis of a cross-sectional study.

To identify the underlying subtypes of hidradenitis suppurativa (HS), we performed latent class analysis on prospective clinical data of 618 consecutive patients seen between 2002 and 2010. The median patient age was 31 years (Q1=26; Q3=38), median age at HS onset was 20 years (16-25), and median Sartorius score was 18 (11-19); 34.4% of patients were of Hurley stage II or III.

Clinical characteristics of a series of 302 French patients with hidradenitis suppurativa, with an analysis of factors associated with disease severity.

Background: Factors associated with the severity of hidradenitis suppurativa (HS) are not known.

Objective: We sought to identify factors associated with the severity of HS.

Methodology: The severity of disease in a series of 302 consecutive patients with HS was assessed using the Sartorius score.

Prevalence and factors associated with hidradenitis suppurativa: results from two case-control studies.

Background: Conflicting opinions have been reported regarding the epidemiology of hidradenitis suppurativa.

Objective: We sought to evaluate the prevalence of hidradenitis suppurativa and to identify associated factors.

Methodology: Prevalence was evaluated using a representative sample of the French population (n=10,000).