Test your diagnostic skills in our regular dermatology quiz. What is the cause of these painful lesions occurring on a woman’s vulva and groin?
A 32-year-old woman presents with recurrent nodules and pustules on the left side of the vulva and extending to the groin (Figure 1). The lesions are painful and exude pus. She has been treated for the condition several times with antibiotics, despite bacterial swabs consistently returning negative results.