Urticaria, commonly known as wheal, is a common skin disease. Due to various factors, temporary inflammatory hyperemia and a large amount of fluid exudation appear in the blood vessels of skin mucosa. Causing local edema damage. It appears and quickly subsides, accompanied by severe itching. There may be fever, abdominal pain, diarrhea or other systemic symptoms. The occurrence of urticaria is mainly caused by allergic reaction, and the most common inducing factor is diet. Many patients often have urticaria after eating fish, shrimp, crab, eggs, beef, strawberries, cocoa, tomatoes, garlic and other foods; In addition, food additives such as condiments, pigments and preservatives can also cause allergies. Polypeptide substances (such as stinky tofu, rotten eggs, spoiled fruits, etc.) decomposed after food spoilage. ) and protein in food are absorbed into the blood in the form of peptide or peptone, which is very easy to cause allergic reaction and induce urticaria. Therefore, to prevent urticaria, we must avoid foods that may cause allergies. Recurrent urticaria in many patients is closely related to careless diet.

Patients with urticaria with definite food allergens should avoid eating foods containing allergens. People with abdominal pain should avoid eating rough, shelled and hard food, so as not to aggravate abdominal pain and cause upper gastrointestinal bleeding. Diarrhea patients should not eat foods with high cellulose content and laxatives, such as celery and bananas. Diet should be warm, avoid greasy and cold food. Do not eat spicy and fishy food, such as beef and mutton, chicken, seafood, coriander, leek, ginger, garlic, onion, eggs, fungi and other foods, and do not drink strong tea and wine.