The red bumps on the waist are mainly considered the following cases: 1. Consider allergic skin diseases, such as urticaria, mainly due to allergenic factors that lead to capillary dilation and increased permeability of the skin mucosa of the waist, thus causing localized edematous reactions, which can be seen clinically as erythematous and windy rashes, accompanied by itching. Therefore, the first step in the treatment is to remove the allergenic factors, such as avoiding exposure to relevant drugs, food, and some environmental factors. If mild itching is present, a stove glycolic lotion can be applied. If the itching is severe and accompanied by a large number of windy rashes, you can apply a mixture of mometasone furoate cream and urea vitamin E milk topically, and also take oral orotretinoin hydrochloride tablets. 2. Consider a fungal disease, such as ringworm of the body, which is a fungal disease mainly caused by dermatophytes, mainly due to pets kept at home, parasites from pets infecting people, or due to long-term untreated ringworm of the feet, which can be found on the Ringworm can be seen on the lower back, where circular erythema can be seen, and the edges are elevated and the center is more lightly colored and covered with a thin layer of scales, accompanied by itching. For treatment, a mixture of bifenazole cream and tretinoin econazole cream can be used topically. If the rash increases in size and is accompanied by itching, the patient can also take oral fluconazole capsules. Therefore, after red bumps on the waist, patients are advised to go to a regular hospital and undergo appropriate laboratory tests under the guidance of a dermatologist so as to guide clinical treatment.