Children’s skin allergies are mainly related to the production of histamine and other substances when allergies occur. When children’s skin allergies occur, some substances will be produced, more of which is histamine, will cause stimulation of the peripheral nerves of the skin, so there will be changes in the skin changes, but also make people have a feeling, itchy, painful and other symptoms. In daily life, there are many factors that cause allergies in children, such as certain drugs, food, chemicals, dust mites and pollen, etc. It is recommended to go to the hospital to test allergens, and then targeted to stay away from allergens, to minimize the occurrence of allergies, and if there is a serious allergic reaction, it is necessary to go to regular hospitals in a timely manner, to give effective treatment.