Why would you get hives?

The causes of urticaria generally include food factors, mental factors, infection factors, etc. The specific analysis is as follows:

1. Food factors

Because patients eat crabs, scallops, hairtail, shrimp and other hair in large quantities, they are easy to cause allergic reactions in the body, releasing histamine, stimulating local tissues and causing urticaria.

2. Mental factors

Because patients are excited, nervous, anxious and other emotions for a long time, they will stimulate the autonomic nerve to release acetylcholine, which is easy to cause vasodilation and promote the release of histamine, causing urticaria.

3. Infection factors

Because patients are invaded by pathogens such as Staphylococcus aureus, adenovirus, respiratory syncytial virus, etc., along with the continuous growth of pathogens in the body, they will stimulate local tissues and cause urticaria.