How does red knot itch grow on child body to return a responsibility

Red lumps itch on the child, this situation is likely to be caused by allergies, the causes of allergies are: 1. Food, common allergenic food for fish, shrimp, crab, beef, mutton, eggs, etc., red lumps itch on the child may be caused by eating the above food;2. Drugs, common allergenic drugs penicillin, sulfonic acid and other drugs, if the child ate the above drugs may show red lumps and itching symptoms on the body; 3. Infections, bacterial or fungal infections, or mosquito bites can cause red pimples and itching in children.