成人色素性荨麻疹一例

摘要

患者,女,23岁。全身浅褐色斑片4年,皮肤划痕征(＋),Darier征(－)。皮损组织病理示：真皮乳头层和真皮浅层血管周围可见灶状分布的圆形和梭形肥大细胞。甲苯胺蓝染色(＋)。诊断：色素性荨麻疹。%A 23-year-old girl presented with generalized light brown macules for 4 years. Dermographism was positive and Darier sign was absent. Histopathologic examination showed the mast cells with round and fusiform shape which was found in the perivascular of the papillary body and upper dermis. These inflamma￣tory cells were stained positively with toluidine blue. The diagnosis was urticaria pigmentosa.