Photo Rounds

Rash in groin

A 45-year-old woman asked her family physician to take a look at a painful rash in her groin. She said that a month earlier, the rash had started as blisters that popped. The blisters then went away, and the skin thickened and became dark. The patient, who was overweight and who had well-controlled hypertension, did not have a rash anywhere else. The lesions involved the inguinal and suprapubic areas in a symmetrical fashion.

What's your diagnosis?


 

A punch biopsy confirmed the suspicion of a dermatologist that the family physician (FP) had consulted; this was a case of pemphigus vegetans. Pemphigus vegetans, a variant of pemphigus vulgaris, is associated with vegetating proliferation of the epidermis. Pemphigus vegetans is usually seen in intertriginous areas like the axilla, groin, and genital region.

Once the biopsy was read as pemphigus vegetans, the dermatologist took over management of the patient. Management is very similar to that of pemphigus vulgaris, but the lack of oral involvement makes this condition easier to treat. In this case, the patient was prescribed prednisone 60 mg a day and topical clobetasol ointment twice daily to the affected area.

Text for Photo Rounds Friday courtesy of Richard P. Usatine, MD. Photos courtesy of Eric Kraus, MD. This case was adapted from: Mittal S. Pemphigus. In: Usatine R, Smith M, Mayeaux EJ, et al, eds. The Color Atlas of Family Medicine. New York, NY: McGraw-Hill; 2009:794-798.

To learn more about The Color Atlas of Family Medicine, see:

• http://www.amazon.com/Color-Atlas-Family-Medicine/dp/0071474641

The Color Atlas of Family Medicine is also available as an app for mobile devices. See

• http://usatinemedia.com/

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