Too much histamine in seafood can cause discomfort. A few people eat fresh fish or seafood because they are born with a lack of enzymes that decompose histamine, which can cause allergies. Allergy is a chronic disease, which is related to physical fitness. Many people will have different degrees of allergic reactions when they eat seafood (scare, fish, crab, etc.). ), mostly manifested as papules in some parts of the body (face, legs, arms, and even the whole body), accompanied by itching symptoms. Some people have abdominal pain, diarrhea and other symptoms after eating seafood such as shrimp, crab, shellfish, fish or other animal protein foods, leading to allergic enteritis. There is nothing abnormal about normal people eating the above seafood, but a few people are abnormal. Normal human intestinal digestive juice contains many digestive enzymes, such as protease and peptidase. The ingested heterogeneous protein is digested into peptides by protease, and then digested into amino acids by peptidase. Protein molecules change from large to small, and its structure changes from complex to simple, and finally it is absorbed into the blood as a nutrient. However, some people's intestinal digestive juice lacks some proteases or some peptidases, so they can't fully digest foreign protein. In addition, these people often lack an antibody called secretory immunoglobulin A(SIgA) in their intestines, which is distributed on the mucosal surface. The intestinal mucosa surface of normal people is protected by SIgA, which makes it difficult for bacteria in the intestine to establish and reproduce on the intestinal mucosa. However, people who lack SIgA cannot protect the intestinal mucosa, and bacteria in the intestine can grow and multiply on the intestinal mucosa, which makes the intestinal mucosa inflamed and increases the permeability of blood vessels. These undigested foreign proteins and peptides can be absorbed into the blood as antigen substances, and the human body can produce antibodies against these antigens, which are adsorbed on the surfaces of some cells to sensitize them. When eating the same seafood food again, these sensitized cells can release bioactive substances such as histamine and leukotrienes, which will cause intestinal smooth muscle contraction spasm, intestinal capillary dilation, increased permeability, increased intestinal gland secretion, abdominal pain, diarrhea and other symptoms. This is the same as the mechanism that some people are allergic to pollen again and lead to bronchial asthma attack. What about seafood allergy? Most patients are allergic because of excessive consumption of seafood. Dermatologists remind the public that if they find itchy and red skin after eating seafood, they should be desensitized in time. Seafood allergy is an allergic disease, which can be divided into acute and chronic. Patients with acute seafood allergy should pay strict attention to diet and avoid spicy, seafood and other foods; Patients with chronic seafood allergy will get worse after eating certain foods. Allergic foods include seafood, peppers, mushrooms, bamboo shoots, wine, mangoes, strawberries and parsley. Patients with chronic seafood allergy should be desensitized to allergens in time. In addition, patients should avoid scratching the affected area, scalding with hot water and topical drugs, and avoid eating animal protein food and seafood hair.
What are the allergic symptoms of eating lobster?
Allergic to eating lobster, the symptoms are pale, itchy all over, or a large rash. If it's just little red dot, it should be bitten by a mosquito. . . it doesn't matter
Skin allergy symptoms caused by lobster
If you are allergic, you can only not eat it. Many people eat shrimp and crabs!
What are the symptoms of eating crayfish allergy? Can crayfish be allergic to themselves?
Crayfish (scientific name: Procambarus clarkii): also known as Procambarus clarkii, red crayfish and freshwater crayfish. Shaped like a shrimp with a hard shell The adult is about 5.6~ 1 1.9 cm long, dark red, with nearly black carapace and wedge-shaped stripes on the ventral back. Young shrimps are evenly gray, sometimes with black ripples. Long and narrow claws. The middle part of the carapace is not separated by a mesh gap, and there are obvious particles on the carapace. The frontal sword has a lateral thorn or a notch at the end of the frontal sword.
What should I do if I am allergic to crayfish?
Allergic symptoms can be ignored, and severe symptoms should go to the hospital.