Hidradenitis suppurativa is a chronic, scarring, acnelike inflammatory process that occurs in the axillae, groin, and around the nipples and anus.
Hidradenitis suppurativa is currently thought to be a chronic inflammatory condition of the hair follicle and associated structures. Follicular inflammation and subsequent occlusion leads to rupture of the follicle and development of abscesses, sinus tracts, and scarring.
Swollen, tender masses resembling cutaneous abscesses develop. These lesions are often sterile. Pain, fluctuance, discharge, and sinus tract formation are characteristic in chronic cases. In chronic cases, bacterial infection may occur in deep abscesses and sinus tracts. In chronic axillary cases, coalescence of inflamed nodules causes palpable cordlike fibrotic bands. The condition may become disabling because of pain and foul odor.
Diagnosis is by examination. Cultures should be taken from deep abscesses and sinus tracts in patients who have chronic disease, but often no pathogens will be found. The Hurley staging system describes the severity of disease.
Treatment goals are to prevent new lesions, reduce inflammation, and remove sinus tracts.
For Hurley stage I disease, typical treatment includes topical 1% clindamycin solution bid, topical resorcinol 15% cream once/day, oral zinc gluconate (90 mg once/day), intralesional corticosteroids (eg, 0.1 to 0.5 mL of a 5 to 10 mg/mL solution of triamcinolone acetonide once/mo), and short (eg, 7- to 10day) courses of oral antibiotics. Tetracycline (500 mg bid), doxycycline (100 to 200 mg once/day), minocycline (100 mg once/day), or erythromycin (250 to 500 mg qid) are used until the lesions resolve. A typical regimen could include one topical treatment (eg, based on the patient's skin sensitivity) and an antibiotic; however, all treatments can be used in combination or alone.
For Hurley stage II disease, treatment is with a longer (eg, 2- to 3-mo) course of the same oral antibiotics used to treat stage I disease; if response is incomplete, clindamycin 300 mg po bid and/or rifampin 600 mg po once/day may be added to the regimen. Adding antiandrogen therapy (eg, with oral estrogen or combination oral contraceptives, spironolactone, cyproterone acetate [not available in the US], finasteride, or combinations) may be helpful in women. Incision and drainage may reduce the pain of an abscess but are insufficient for disease control (unlike in common cutaneous abscesses). For acute inflammatory lesions that are not excessively deep, punch debridement (ie, excision with a 5- to 7-mm punch instrument followed by digital debridement and curettage or scrubbing) is preferable. Sinus tracts should be unroofed. Patients whose lesions are deeper should be evaluated by a plastic surgeon for consideration of excision and grafting.
For Hurley Stage III disease, medical and surgical therapy should be more aggressive. Evidence of efficacy in reducing inflammation is strongest for infliximab (5 mg/kg IV at wk 0, 2, and 6). Alternatively, adalimumab (80 mg sc, followed by 40 mg every other week) or retinoids (isotretinoin 0.25 to 0.4 mg/kg bid for 4 to 6 mo or acitretin 0.6 mg/kg once/day for 9 to 12 mo) have been effective in some patients. Wide surgical excision and repair or grafting of the affected areas is often necessary if the disease persists. Ablative laser therapy (CO2 or erbium:YAG) is an alternate surgical treatment.
Recommended adjunctive measures for all patients with hidradenitis suppurativa include maintaining good skin hygiene, minimizing trauma, providing psychologic support, and possibly avoiding high glycemic load diets.
Last full review/revision May 2013 by A. Damian Dhar, MD, JD
Content last modified November 2013