Children with bumps and itching may be caused by hives, eczema, chicken pox and other diseases. 1. Hives: the release of inflammatory mediators (histamine, 5-hydroxytryptamine, kinin, slow reactive substances, etc.) due to allergies, autoimmunity, physical stimuli, insect bites and other factors can cause vasodilation, increased vascular permeability and inflammatory cell infiltration. Manifested as reddish-white bumps of different sizes, often accompanied by obvious itching. 2. Eczema: is caused by a variety of internal and external factors in the superficial dermis and epidermal inflammation, clinically manifested as erythema on the basis of the pinpoint to corn size papules, papules, often accompanied by obvious itching. 3. chickenpox: chickenpox is caused by varicella-herpes zoster virus viral infectious diseases, lesions first occurred in the head and face, and then extended to the trunk and proximal limbs, lesions initially for the red rash, and gradually become papules, papules, blisters, pustules, accompanied by obvious itching. If the symptoms of children’s itchy bumps are serious, or the symptoms persist and do not improve, parents should be brought to the hospital in a timely manner, improve the examination to clarify the diagnosis, standardized treatment under the guidance of the doctor.