关键词: 马拉色菌属, 毛囊炎, 花斑糠疹

Abstract: To report one case of folliculitis and one case of pityriasis versicolor caused by Malassezia species. Patient 1 was a man acquired red papules on the back for 2 months. After 1 month, the red papules spreaded to the submandibular and front of the neck. The acne treatment was invalid. Patient 2 was a 13 years old girl,who had light red patches on the abdomen for 1 month. The patches enlarged after 3 weeks, and the treatment for eczema was ineffective after 1 week. Fungal microscopic examination of case 1 showed spherical budding yeast cells, sample from case 2 showed yeast cells and banana-like hyphae. SDA culture with olive oil showed white yeast-like colonies on the surface, which grow slowly.They were diagnosed with folliculitis and pityriasis versicolor caused by Malassezia species,respectively. Malassezia folliculitis was treated with oral itraconazole capsules and topical antifungal drugs, and the fungal microscopy and culture were negative after 6 weeks. The red patches of the pityriasis versicolor of case 2 disappeared after 6 weeks topical antifungal drugs.

Key words: Malassezia species, folliculitis, pityriasis versicolor