To the Editor.—
Esterly et al1 described the entity of eruptive vellus hair cysts (EVHC) in 1977. Since then, there have been two additional reports in the United States2,3 and one in Korea.4 The typical lesions consist of multiple, miliary papules with the histologic feature of intradermal cysts containing numerous vellus hairs and keratinous material. We observed the first patient in Japan recently.
Report of a Case.—
A 25-year-old woman had had a two-year history of asymptomatic skin lesions on the anterior part of her chest wall. The lesions were blue-black, smooth papules, 2 to 3 mm in diameter and numbered more than 20 (Fig 1). The patient had no symptoms suggestive of systemic diseases and denied having previous local skin disorders in the affected area. Results of all laboratory tests that were performed were negative or within normal limits. Histologic examination of serial sections disclosed a