Bumps on the body and itching are usually caused by skin allergies, such as oral or contact with allergy-prone substances. If you want to stop itching, you can do the following: 1. Apply anti-allergic drugs, commonly used oral anti-allergic drugs such as loratadine, cetirizine, and also intramuscular injection of benadryl to anti-allergic. 2. You can apply topical creams or coatings such as commonly used glycolic lotion, dexamethasone ointment, dermatol ointment, etc., all of which have anti-allergic and anti-inflammatory effects. 3. 4. Glucocorticoids can be applied, such as dexamethasone, prednisone or methylprednisolone, all of which have anti-inflammatory and anti-allergic effects.