Diagnosing Hidradenitis Suppurativa.

Three diagnostic criteria must be met for hidradenitis suppurativa: typical lesions, occurrence in one or more of the predilection areas, and that it is chronic and/or recurrent. Several outcome measures are used, including patient-reported pain and itch scales, Dermatology Life Quality Index, and Skindex. Hidradenitis suppurativa is associated with significant comorbidities that must be addressed in the evaluation of the patients.