Children in the limbs of the symptoms of red bumps, when serious, there are small blisters on top, the children consciously localized itching is more serious, some children localized skin is scratched and even appear infected. After the emergence of such cases, parents are very anxious, but also worried about whether it will be contagious, we told parents, this is papular urticaria, is the bug bite, not contagious. Some parents are half believing this, they feel that the house is very clean, how can there be bugs? With the arrival of spring and the revival of everything, bedbugs, fleas, lice, mites and midges, which are the culprits of children’s illnesses, are also active. These bugs usually live in damp, dark corners. Children’s skin resistance is poor, and when they are bitten, the toxins of the bugs are injected into the skin, and the symptoms mentioned above will appear. How to prevent is the main thing, pay attention to personal and environmental hygiene, pay attention to home ventilation and air, keep dry, children bathe regularly, strengthen exercise, improve resistance. If similar symptoms occur, parents should not panic, try to avoid local scratching, in order to prevent infection, can be used externally 1% mint glycerine lotion or glucocorticosteroid cream to stop the itching and anti-inflammatory, serious cases can be taken orally anti-allergy drugs, usually about a week will be cured.