Itchy skin with small red bumps in children may be caused by atopic dermatitis, urticaria, insect bite dermatitis and eczema. 1. Atopic dermatitis: due to children’s poor resistance and dry skin, allergens are prone to invade the skin and atopic dermatitis occurs, resulting in erythema, slight bumps, pimples, itching, vesicles, oozing and other symptoms after scratching. 2. urticaria: children in contact with dust mites, pollen, animal fur and other allergic substances, or eat seafood, milk, mango and other allergic food itself, there will be redness and swelling of the skin, itching and other symptoms. 3. Insect bite dermatitis: children’s skin is more delicate, mosquito bites will appear red, swollen, itching and other symptoms, you can use glycerine lotion, play the role of itching. In addition, in the mosquito more time, to give the child good protection measures. 4. Eczema: In addition to itchy red bumps, there will be blisters, oozing, flaking and other symptoms, and the possibility of recurrent attacks. Children’s itchy skin small red bumps of patients are recommended to the hospital in a timely manner, clear cause, under the guidance of the doctor’s reasonable use of drugs and standardized treatment.