报告一例由常见的石膏样毛癣菌引起的皮下脓肿.患者女性,24岁、因双大腿内侧有一些5×10cm皮炎斑块就诊.斑块内有多个小结节,右大腿一2×2cm结节的中心有波动感,双侧腹股沟淋巴结略肿大,无压痛.损害约起于6个月前,初为瘙痒性结节,经多种外用药治疗无效.皮肤活检组织学检查仅见真皮内有轻度的非特异性炎症.疑为变态反应性接触性皮炎(可能是外用类固醇的基质中含有丙二醇之故),合并继发细菌性脓肿.用针头从波动区抽出脓性分泌物,革兰氏染色 A case report of a subcutaneous abscess caused by the common gypsum-like Trichophyton mentagrophytes, female, 24 years old with some 5 x 10 cm dermatitis plaques on the medial side of the double thigh, multiple small nodules in the plaque and a 2 x right thigh 2cm nodules in the center of a sense of volatility, bilateral inguinal lymph nodes slightly swollen, no tenderness damage about 6 months ago, the first for pruritus nodules, after a variety of external drug treatment is invalid. Skin biopsy histology only see Dermal mild non-specific inflammation suspected of allergic contact dermatitis (which may be the topical steroid matrix contains propylene glycol), combined with secondary bacterial abscess needle with a discharge from the area of ​​purulent secretions, a