LAUSR

The proceedings contain 147 papers. The topics discussed include: Clinical characterization of pediatric-onset hidradenitis suppurativa: Results from a multicenter European study;HS in patients with pilonidal sinus disease: Development and internal validation of a risk calculator;prevalence of inflammatory bowel diseases in hidradenitis suppurativa/acne inversa population - results from the German Hidradenitis-Suppurativa-Registry HS-BEST;the overlapping pathogenesis of Crohn's disease and hidradenitis suppurativa explored;the differentiating effect of COVID-19-associated stress on the morbidity of healthy blood donors with symptoms of hidradenitis suppurativa;dietary intake and physical activity of hidradenitis suppurativa patients in a large population-based cohort;and outcome measures for moderate and severe hidradenitis suppurativa: Lessons learned from the shine study.