Small red bumps that are particularly itchy after being bitten by bugs on the body usually refer to insect bite dermatitis, which can manifest as pimples and wind bumps with intense itching. It can be treated by general treatment, topical medication, oral medication and other methods. 1. General treatment: you can use soapy water or water to clean the biting area, pay attention to environmental hygiene, eliminate mosquitoes for, pay attention to change underwear, sun bedding, to prevent mosquito bites. 2. Topical drugs: you can apply local glycerine lotion, can play the role of astringent and antipruritic, you can also apply tretinoin cream, mometasone furoate cream, can play an anti-inflammatory and antipruritic effect. 3. Oral medication: If the simple use of topical medication is not obvious, you can take oral cetirizine, ebastine and other antihistamines. The red bumps on the body after being bitten by the bug is particularly itchy, you should consult a doctor in a timely manner, standardized treatment, the above drugs need to be used in accordance with the doctor’s instructions.