Red circles on the body are considered more likely to be ringworm, which is a manifestation of fungal skin infection. If the fungus is found in the hospital examination, topical antifungal drugs such as clotrimazole ointment, ketoconazole cream, terbinafine spray, and butenafine ointment can be used 1-2 times a day, but you need to insist on using them for more than 4 weeks, or for two weeks after the symptoms disappear. If the above creams do not work well or the rash on the body is more extensive, you can repeat the application once, or use antifungal drugs in combination with oral drugs for treatment, such as itraconazole capsules, terbinafine tablets, etc. You should pay attention to personal hygiene and disinfect towels with frequent exposure to the sun.