Itchy red bumps on the body may be eczema, urticaria, insect bite dermatitis and other diseases caused by the cause of the need for topical glucocorticosteroids, oral antihistamine treatment. 1. Eczema: itchy red bumps may be caused by eczema. Patients can use topical glucocorticosteroids, such as trimethoprim and dexamethasone. Combined oral antihistamines, such as loratadine, cetirizine and so on. 2. Hives: red bumps on the body itchy is also considered to be due to hives. Patients can take oral antihistamine drugs, such as loratadine, ebastine, olopatadine and so on. 3. Insect bite dermatitis: if the mosquito bite localized red bumps, with significant itching, then consider the insect bite dermatitis. Can be used externally dinexed ointment, compound flumethasone ointment and other glucocorticoid drugs, combined with oral antihistamines such as cetirizine and other treatments. Patients with itchy red bumps on the body need to identify the cause of the disease, and then take medication under the guidance of a doctor, do not take medication without authorization.