Why does urticaria arise repeatedly

Repeated urticaria may be caused by improper contact with allergens, environmental influences, low immunity and other reasons.

1. Improper contact with allergens

If the patient does not identify their own allergens in time, continuous improper contact or ingestion of allergens at ordinary times will usually lead to repeated allergic reactions on the skin and cause urticaria.

2. Environmental influences

Long-term exposure to humidity, heat or excessive dryness may cause abnormal stimulation to the skin, which will lead to abnormal expansion of skin blood vessels and repeated attacks of the disease.

3. Low immunity for a

long time in a low state will lead to a decline in the body's ability to fight external stimuli, usually during improper contact with allergens will also induce diseases.