The red envelope on my body itches like a mosquito.

It itches to have a red envelope on my body. We can generally think that it is caused by urticaria. If you want to avoid urticaria, you should try to avoid contact with allergens, exercise more and improve your immunity. There are many causes of urticaria, which can be divided into:

Food. Crab, eggs, fish, shrimp, milk and other foods often contain special protein, and special protein is a common pathogenic factor.

Drugs. The drugs that cause urticaria are furazolidone, sulfonamides and penicillins.

Pollen, dust and other contact with the human body can also cause urticaria.

Infection. There are still many kinds of infections, including viral infection, fungal infection, bacterial infection and parasitic infection. Common insect bites include mites, fleas and bedbugs.

Heredity. The common family inheritance is familial cold urticaria.

Chemical and physical factors such as cold, heat, sunshine, friction and pressure can also cause urticaria. Not only that, some chemicals are also important factors leading to urticaria. 7. Endocrine disorders. Once endocrine disorders, it will cause emotional impulses and mental tension, and sometimes it will cause urticaria. Patients with urticaria should adjust their diet reasonably, avoid being greasy and spicy, and eat more fruits.