Sweat ringworm refers to florid furosemide. Children are prone to florid furosemide, which may be related to heredity, environment, physical fitness, immunity and so on. 1. Heredity: pityriasis versicolor is caused by Malassezia infection, which is a kind of conditional pathogenic bacteria, pityriasis versicolor has a certain relationship with heredity, and the risk of disease will be increased in those who have family history. 2. Environment: If you are in a hot and humid environment for a long time, the fungus is easy to reproduce, so it is easy to get sick. 3. Physical condition: excessive oil secretion, active and easy to sweat, Malassezia fungus is easy to reproduce. 4. Immunity: children’s immunity is low, or children’s skin is often easy to be damaged, also easy to cause Malassezia breeding. In addition to the above factors, florid chaff rash is also related to some other factors, such as wearing airtight clothes and so on. If you are diagnosed with pityriasis versicolor, early and standardized treatment is recommended to minimize the adverse effects of the disease.