1 Crayfish is rich in protein. For some people, these protein belong to foreign protein, so after eating them, they will be allergic and then itch all over.

2. Crayfish is rich in protein, which will be decomposed and utilized by some bacteria, resulting in cadaverine and histamine, among which histamine can cause allergies, so it will also itch all over the body after eating crayfish.

2 What should I do if I eat crayfish and feel itchy all over 1? If I only feel itchy all over after eating crayfish, I can use some anti-allergic drugs and ointments.

2. At the same time, drink more hot water and vitamin C-rich solution to promote the metabolism of allergenic components in the body and reduce the severity of allergies, which has a certain effect on relieving allergies.

3. If there is a large area of edema when the whole body itches, especially respiratory edema, it is often manifested as dyspnea, so you need to go to the hospital immediately to avoid serious discomfort.

3 People who eat crayfish are prone to itch all over. People who are allergic to crayfish protein are rich in protein. Because of its protein composition, crayfish is a foreign protein for some people, and allergies will occur after eating it.

People with sensitive constitution are rich in protein and water, which are easy to be bred by bacteria, and decompose cadaverine and histamine. Histamine will increase vascular permeability, leading to edema and itching. Therefore, people with sensitive constitution are prone to allergies after eating crayfish.

4 How to eat crayfish is not easy to itch 1, for people who are allergic to crayfish white matter. As long as you eat it, you will have allergies, so don't eat crayfish to prevent allergic itching.

2. For people with sensitive constitution, we can reduce the histamine content in crayfish by not eating crayfish that have been dead for a long time and only eating freshly processed crayfish, which has the effect of preventing allergic itching.