What is urticaria

summary

Urticaria is a incidence rate of allergic Department of Dermatology disease, there are many classifications. Therefore, patients need to know more about the disease, in order to better treat the disease and avoid the harm of the disease.

What is urticaria

1. Scratch urticaria is an allergic reaction of skin and blood vessels. The formation of allergic reaction is caused by both internal and external factors.

2. Artificial urticaria, also known as skin scratch disease, is a temporary red strip protrusion after scratching the skin with hand or blunt instrument.

3. There is a special protein in the serum of this kind of patients, which is immunoglobulin IgE. If this kind of protein combines with allergen, the body will cause a series of reactions, and finally lead to the mast cells around the skin blood vessels to release a large amount of histamine. Histamine will cause the expansion of skin blood vessels, and the serum will seep out of the blood vessels, which will produce pruritus.

matters needing attention

Patients should pay attention to observe allergens at ordinary times. If a certain food or drug allergy is found, it should be stopped immediately. Contact with suspected allergens should be avoided as far as possible. Nail should also be cut short, do not scratch, otherwise it can cause skin lesions increased significantly, severe itching.