Itchy bumps on the body may be caused by hives, erythema multiforme, eczema, etc. It can be treated by adjusting lifestyle, paying attention to cleanliness and medication. 1. Hives: itchy bumps on the body may be hives, hives may be caused by allergies or metabolic disorders. It can be treated by adjusting lifestyle, avoiding staying up late, paying attention to light diet, staying away from food and clothes that may cause allergy, paying attention to the cleanliness of the affected area, taking oral fexofenadine hydrochloride tablets, and applying topical glycerite lotion. 2. Erythema multiforme: itchy bumps on the body may be erythema multiforme, which may be caused by allergy or drug stimulation. It can be treated by keeping away from allergens, paying attention to rest, taking a light diet, and using medicines such as Epinastine Hydrochloride Capsules and Denadyl Cream. 3. Eczema: Itchy bumps on the body may also be eczema. It can be treated by paying attention to rest, taking a light diet, keeping away from allergens, keeping clothes clean and using medicines such as loratadine and mometasone furoate ointment. It is recommended that once patients find themselves with itchy bumps on the body, they should seek timely medical treatment to improve the relevant examination and treatment for the cause of the disease. In addition, the drug may have side effects, medication should be used under the guidance of a doctor, do not blindly use drugs.