花斑癣是临床常见病之一,发病时和病愈后常表现为色素减退斑或色素沉着斑,治愈后色素改变常需数月甚至数年后才能恢复正常。我们对花斑癣患者皮损和正常背部及上臂部皮肤皮屑作培养,以比较色素减退和色素沉着部位,皮损和正常部位马拉色菌菌种构成是否存在差异。一、研究对象我 Pityriasis versicolor is one of the common clinical disease, morbidity and recovery often manifested as hypopigmented spots or pigmented spots, pigment changes often require months or even years to return to normal. We cultured the skin lesions of Pityrias versicolor and normal dander skin of the upper arm to compare whether there is a difference in the pigmentation and pigmentation, skin lesions and normal Malassezia species composition. First, the research object I