A chronic skin infection,usually of the scalp,caused by fungi of the genus Trichophyton and characterized by the development of thick,yellow crusts over the hair follicles.

• 黄癣一种慢性皮肤传染病，通常发生在头皮，由发癣菌属的细菌引起，特点是发囊上形成厚而黄的硬皮。