147 Diffuse non-scarring alopecia and syringoma.

Chull-Wan Ihm, Ki-Bong Ko. Chonbuk National University Hospital, Department of Dermatology, Chonju, South Korea.

Cases showing both alopecia and syringoma or eccrine sweat duct proliferation have rarely been reported but discussions seem to continue if the sweat duct proliferation is true syringoma or not and if the sweat duct proliferation would be the etiology of the alopecia or the result of fibrosis after inflammation causing the alopecia. We report a case whose diffuse alopecia was thought to be due to syringoma of the scalp. A 43- year old woman developed diffuse hair thinning on her temporal and frontal scalp with papular eruptions on the face and the posterior auricular areas for the past 5 years. Both of the papular eruptions and hair thinning developed together and gradually progressed. On the posterior auricular areas the papular eruptions stopped about 2cm before the auricles and changed to smooth flat skin. Biopsies from the temporal scalp, the smooth area adjoining the auricle, the papules on the posterior auricular area and on the forehead all showed syringomatous infiltration. With above findings we concluded that syringoma could develop without papular skin lesions and could cause non-scarring diffuse hair thinning.