Vulvar ulcer of unknown etiology in a human immunodeficiency virus-infected woman: response to treatment with zidovudine.

We report a woman who presented with an intractable vulvar ulcer of unknown etiology. Human immunodeficiency virus antibodies and a depressed CD4 lymphocyte count were the only remarkable findings. There was no evidence of syphilis, chancroid, or herpes simplex virus infection. The ulcer healed in association with treatment with zidovudine.