The common cases of red pimples on the body and itchy are as follows: 1, may be the emergence of allergic dermatitis, and this dermatitis sometimes appears more obvious inflammatory reaction, may be manifested as a certain inflammatory papules, papules, and produce a certain itching symptoms; 2, due to mosquito bites or mite allergy caused by papular urticaria, this skin damage is generally manifested as isolated inflammatory papules, in appearance may 3. Viral infections, especially varicella-zoster virus infections after the formation of chickenpox, may form isolated red papules in the early stage, which may also be accompanied by certain blisters, and most patients will be accompanied by obvious itching symptoms.