besides there were purplish red papules and plaques with adherent scales and keratinous plugs on the cheeks and back of the ears.

• 临床表现为头顶、两颞侧头皮片状脱发,头顶脱发区边缘出现片状白斑,面颊部两侧、耳后见境界清楚的紫红色丘疹、斑块,表面有粘着性鳞屑,鳞屑下方有角栓。