It is important to combine prevention and treatment to cure ringworm completely. If you also have ringworm on the hands and other parts of the skin, such as ringworm on the feet, body, nails, and head, you should treat them at the same time, because they are mutually contagious, which is also the reason why ringworm on the hands keeps recurring for a long time. In addition, it is also important to disinfect clothing that has been in contact with it, such as towels, shoes, socks, underwear, bedding, etc., and to avoid contact with other sources of infection; it is also important to minimize contact with detergents, acids and bases, and other irritants in daily life to avoid aggravating the lesion.