How is child urticaria caused

Urticaria is an allergic disease, the cause of the disease is more, this allergy can be contact with the substance allergy, such as Yang Xu catkins, can also be eaten food, such as fish and shrimp these foreign protein, or say there are some fruits, such as mango or kiwi fruit. Can go to the hospital to check the allergen, find the exact allergic substance, desensitization treatment, prevent eating allergic food. In terms of diet, attention should be paid not to eat too much spicy food, try to prevent eating fish, shrimp and other hair, prevent recurrence of illness, regular rest, and improve immunity.