[Acne inversa (hidradenitis suppurativa). From diagnosis to therapy].

An estimated 1% of the population suffers from hidradenitis suppurativa/acne inversa, a chronic inflammatory disease that is a burden for patients and doctors alike. The progressive disease often isolates the patients socially and causes constant pain. It can take years until the diagnosis is finally made. Dermatologists are often confronted with a relapsing condition and a frustrated patient. This article summarizes our understanding of the disease and outlines therapeutic options.