Sweat patches, also known as lichen planus, is a fungal infection, and its main pathogen is Malassezia, not Candida. Furfurfur is a chronic superficial fungal infection caused by Malassezia involvement in the stratum corneum of the skin, usually occurs on the back of the shoulders, chest, armpits and other parts of the sebaceous gland secretion, and the lesions show a gradual development of the trend, from the dotted spot gradually expanded to the size of a nail, and finally will be fused into a piece. Florid chaff rash is a kind of fungal infectious disease, and its main pathogen is Malassezia, which is not related to Candida, and has been classified into 14 species so far, with Malassezia coelicolor, Malassezia furfur, or Malassezia sphericalis as the main ones. After diagnosed with florid chaff rash, patients should actively cooperate with doctors to choose topical and oral antifungal drug treatment, such as clotrimazole, ketoconazole, miconazole and so on, to improve patients’ symptoms.