Red bumps on the body is very itchy a large body need to be treated by drugs, non-drug and other methods, but due to the causes of red bumps on the body is very itchy a large cause more, such as: hives, contact dermatitis, insect bite dermatitis, etc., the specific treatment needs to be based on the cause of the disease to choose. 1. Urticaria: you can choose to use glycerine lotion, mometasone furoate cream and so on, oral cetirizine hydrochloride tablets, loratadine and other antihistamines for treatment under the guidance of a professional doctor. 2. Contact dermatitis: avoid re-exposure to suspected sensitizers or irritants. Avoid scratching and excessive washing. You can choose to take oral chlorpheniramine maleate tablets, loratadine tablets, etc., external zinc oxide paste, tacrolimus cream and other drugs for treatment. If necessary, oral cetirizine, prednisone and other drugs treatment. 3. Insect bite dermatitis: you can use warm water or soap for local washing, pay attention to personal and surrounding hygiene. Choose to use glycerine lotion, hydrocortisone cream, oral cetirizine hydrochloride tablets, ebastine and other drugs for treatment. You should go to the hospital in time to identify the cause of the disease, under the guidance of a professional physician to carry out targeted treatment, to avoid the impact on the health of the body. Drugs need to be used in accordance with medical advice.