Hidradenitis suppurativa: an update

Hidradenitis suppurativa (HS) is a chronic, painful skin disease characterised by recurrent inflammatory lesions in flexural locations such as the axillae, groins and perineum. The papules, nodules and abscesses may discharge bloodstained pus which, combined with pain, results in marked quality-of-life reduction. Sinus tracts and scarring may also result. Onset of HS is typically in the second to fourth decades and it affects about 1% of young European adults. There are links with smoking and obesity and an autosomal dominant pattern of inheritance is reported by one-third of patients. Medical management escalates from topical antimicrobials to oral tetracyclines, a combination of clindamycin and rifampicin typically given for 10 weeks, oral disease modifiers, and anti-tumour necrosis factor-alpha therapies. Excision of individual lesions has high recurrence rates which can be minimised by wider excisions, at the expense of longer healing times. Treatment of pain is a relatively neglected aspect of therapy.