Hidradenitis suppurativa odour and drainage scale: a novel method for evaluating odour and drainage in patients with hidradenitis suppurativa.

Hidradenitis suppurativa (HS) is a condition that commonly presents with recurrent abscesses, nodules, and draining tunnels. Despite drainage and odor occurring as common symptoms that are associated with poorer quality of life, and patients included in the Hidradenitis SuppuraTiva cORe outcomes set International Collaboration (HISTORIC) highly supported that drainage should be recommended in the core domain set, there are no validated instruments to measure drainage.