Allergic urticaria is caused by allergic constitution. After allergens stimulate the human body, the human body will produce a specific antibody, which will attach to mast cells in the body. When eating this food again, this antibody will combine with allergens in the food, causing mast cells to release a large amount of histamine, which acts on blood vessels, increasing the expansibility and permeability of blood vessels, thus leading to a large amount of liquid extravasation into skin tissues, causing allergic urticaria.

Skin lesions in children with allergic urticaria often appear suddenly, and then disappear quickly. After disappearing, there is no trace, but it is easy to recur and can appear several times a day. Wheezing can occur in any part of the child's body and drag it to the digestive tract. In severe cases, symptoms such as nausea, vomiting, diarrhea, and even chest tightness and suffocation may occur.

Nursing methods for children with allergic urticaria;

1. Children should avoid food that is highly irritating and allergic to avoid aggravating allergic symptoms.

2. Animals and plants should be avoided in the environment where children live, so as not to cause allergies.

3. Parents should avoid using alkaline toiletries for their children, so as not to cause irritation to the children's skin, which will aggravate their condition.

4. When the child has itchy skin, parents should distract the child's attention and avoid scratching, so as not to increase skin lesions and aggravate itching.

Parents should not scrub their children's skin with hot water. Although it can temporarily relieve the local area, it is another stimulus, which dilates blood vessels, releases a lot of histamine and aggravates the condition.

Symptoms of allergic urticaria in children. Through the introduction of children's allergic urticaria symptoms by experts in dermatology hospital, I hope parents will pay attention to it and do a good job in prevention in life to avoid the occurrence of diseases. Once the child happens, you should go to the hospital for treatment in time.