Pityriasis lichenoides chronica - 慢性苔藓样糠疹 https://en.wikipedia.org/wiki/Pityriasis_lichenoides_chronica
慢性苔藓样糠疹 (Pityriasis lichenoides chronica) 是一種罕見的特發性後天性皮膚疾病，特徵為成群的紅斑與鱗狀丘疹，病程可持續數月。診斷需進行皮膚切片檢查。

○ 診斷與治療
血液檢查以排除梅毒
皮膚切片檢查以排除皮膚淋巴瘤

更多資訊 ― 繁體中文
References Pityriasis lichenoides chronica - Case reports 15748578
一名 19 歲的女性，已有五年病史，於就診時發現軀幹、手臂及腿部出現小點狀皮疹與凸起的黃色至膚色腫塊，且腫塊周圍有細小鱗屑。Guttate pityriasis lichenoides chronica 是此 T 細胞介導疾病的罕見表現。
A 19-year-old woman came in with a five-year history of small, spotty rashes and raised, yellowish to skin-colored bumps with a ring of fine scales on her torso and arms and legs. Guttate pityriasis lichenoides chronica is an uncommon presentation of this T-cell-mediated disease.