The phenomenon of itchy red bumps on children’s bodies has the common causes of urticaria, scabies, papular urticaria and so on. 1. Urticaria: usually caused by allergic factors, infectious factors, resulting in dilation of small blood vessels in the skin, mucous membranes, increased permeability, and limited edema reaction. Its clinical manifestations are the formation of wind masses and obvious itching sensation. So children with urticaria, will make the body red bumps, and very itchy feeling. 2. Scabies: due to scabies infection, usually itching occurs at night, manifested as typical lesions between the fingers, umbilical region, but also in the vulva, buttocks appear larger nodules. 3. papular urticaria: also called insect bite dermatitis, due to mosquito bites, can appear erythema-like wind, the center of the blisters, accompanied by itching. In short, if the children’s body appeared red bumps and itchy, it is recommended to change the breathable clothing, and go to the regular hospital in a timely manner to treat the symptoms.