黑棘皮病又名黑角化病,系罕见皮肤病。病变呈乳头状,色素增多,所以又称乳头状色素性皮肤营养不良病。分良性与恶性两型。皮肤粗糙肥厚,乳头样增殖,淡褐、黑褐色,多无自觉症状,常生于身体较柔软的部位,掌 Black bacillus, also known as keratoderma, is a rare skin disease. Lesions are papillary, pigmentation, it is also called papillary pigmentary skin malnutrition. There are two types of benign and malignant. Rough and thick skin, papillary hyperplasia, light brown, dark brown, more than no symptoms, often born in the soft parts of the body, palm