psoriasis discoidea

例句：

1. 1.The patient's skin condition is a form of psoriasis that affects the scalp and face.
   患者的皮肤状况是一种影响头皮和面部的银屑病。
2. 2.Psoriasis can be treated with topical creams or ointments.
   银屑病可以通过外用药膏或软膏治疗。
3. 3. The discoid form of psoriasis is characterized by small, flat patches on the skin.
   盘状银屑病的特点是皮肤上出现小而平坦的斑块。