Eczema is a common skin disease, and it is easy to get eczema if underwear is wet or unclean. In order to prevent eczema, underwear should be kept clean and dry first. It is recommended to change it every day in summer, once every two to three days in cold weather and once every three to four days in cold weather. If you sweat, you must change it immediately. The changed underwear should be dried. Underwear should be made of cotton cloth Dry your ass after each bath and apply prickly heat powder or pine pollen to prevent eczema. If you have acne, you can apply some propolis cream and stick to treatment for a few days, and you can be cured. Don't use hormone drugs easily, it may be worse. The treatment scheme is economical, practical and convenient.