Abstract: HU Yan*, ZHU Xiao-hong, CHEN Hao, ZHANG Hai-ping, JI Jin, YANG Li-jia. *Department of Dermatology, Wuxi No.2 People′s Hospital, Wuxi 214002, Jiangsu, China Corresponding author: YANG Li-jia, Email: yanglijia726@163.com 【Abstract】 A 26-year-old woman presented with scaly atrophic erythema on the chest and abdomen for nearly 2 years. Direct microscopic examination of the lesion scrapings revealed numerous stubby hyphae and clustered spores. Periodic acid-Schiff （PAS） staining of the biopsy tissue showed the presence of numerous hyphae and spores in the horny layer. The stain for elastic fibers revealed that the number of elastic fibers decreased, and some elastic fibers became fine and disrupted. The patient was diagnosed with atrophying pityriasis versicolor. The lesions subsided and direct microscopic examination was negative after 1-week treatment with oral itraconazole of 200 mg once daily and 4-week treatment with topical 2% sertaconazole cream.