Itchy red bumps on the body of small children may be caused by allergies, mosquito bites, prickly heat and other factors, the patient should consult a doctor in a timely manner to clarify the cause of the disease. 1. Allergy: If the child in the body itchy red bumps before contact with pollen and other allergy-prone substances, it may be caused by allergies, can use cetirizine, loratadine and other drugs for treatment. 2. Mosquito bites: summer time children may also be mosquito bites caused by red bumps, itchy body, children in the onset of more mosquitoes before going to grass and other places. 3. prickly heat: summer due to the air is hot and humid, small children sweat more sweat discharge is not smooth clogged pores easy to grow prickly heat, thus long red bumps itchy body, such children should keep the environment suitable, can use prickly heat powder and other treatments. There are many reasons for the above symptoms, it is recommended to consult a doctor in time, the above drugs should be used under the guidance of a doctor.