Red bumps on the body are itchy and may be the result of the following diseases: i. Urticaria, the rash of which can subside within 24 hours, can be treated with topical glycolic lotion and oral second-generation non-sedating antihistamines, such as levocetirizine, loratadine, and azelaic acid. Second, eczema, the rash in many forms, recurrent, such as vesicles oozing obvious, with a solution of wet dressing treatment. If there is no vesicular exudate, topical glucocorticoids can be used, such as dinaide cream, tretinoin econazole cream, fluticasone propionate cream, hydrocortisone butyrate cream, etc. Third, insect bite dermatitis, manifested as fusiform wind-blossom-like papules with small blisters in the center, some of which may have pseudopods, can be topical glucocorticoid preparations, such as trimethoprim econazole cream, dextran cream, etc., or herbal cooling and anti-itching agents, such as compound camphor cream, dampicol ointment, etc.