Abstract:

A 26-year-old male patient presented with erythema, and desquamation on the back and back of the neck, with some blisters and pruritus for 2 months. At the time of admission, patchy erythema was seen on the neck and back, and multiple rice-to-nail large red papules and maculopapules were seen in the central part, which fused into a network or sheet, with dark color. There was no scale on the surface, no telangiectasia, and atrophy was not seen. The results of routine blood test, four tests of coagulation, two pairs of hepatitis B, acquired immune deficiency syndrome (AIDS), and syphilis screening were all normal. Fungal test was negative. The histopathological changes of the skin lesions were consistent with prurigo pigmentosa. A diagnosis of prurigo pigmentosa was made. After 1 week, the pruritus disappeared and the red papules mostly subsided, leaving pigmentation. Follow-up was conducted.

Key words:

Tinea corporis, Prurigo pigmentosa, Erythema

摘要：

患者，男，26岁，后颈、背部红斑脱皮，部分水泡伴瘙痒2个月。就诊时见颈部、背部可见片状红斑，中心部位可见多发的米粒至甲大红色丘疹、斑丘疹，融合成网状或片状，颜色较暗，表面未见鳞屑，未见毛细血管扩张，触之未及萎缩。实验室检查血常规、凝血四项、乙肝两对半、艾滋病、梅毒筛查，结果均正常；真菌检查阴性。皮损组织病理改变符合色素性痒疹，诊断为色素性痒疹。经1周后瘙痒消失，红色丘疹大部分消退，留下色素沉着。随访。

关键词:

体癣, 色素性痒疹, 红斑