I vomited all the food I ate due to allergies

Vomiting all the food you eat after an allergy is essentially an acute rejection reaction in the digestive tract triggered by the immune system. Most of the time, it is the body's self-protection mechanism. There is no need to panic excessively. However, if symptoms include tightness in the throat, unsteadiness, and dizziness, you must seek medical attention immediately.

To put it bluntly, this kind of vomiting is a manifestation of IgE-mediated type I hypersensitivity reaction involving the digestive tract. Your gastrointestinal mucosa recognizes the allergen, immediately releases a large amount of histamine, and the smooth muscles contract desperately to drive out all these "foreign invaders". It is essentially the body's self-protection, not a "weak stomach" or a bad stomach. Last week, when I was following up in the allergy department, I met a little girl who was a sophomore. She took a bite of her roommate's mango pancake. She already knew that she was allergic to mango, so she thought it would be okay to just eat a mouthful of cream. However, within half an hour, she squatted in the corridor and vomited. She even vomited all the multi-grain rice she had eaten for lunch and the soy milk she drank in the morning. When she came in, there was still some unwiped mango yellow on the corners of her mouth. She held her stomach and gasped, saying that her entire esophagus was burning.

Regarding whether emergency treatment is required for full-scale vomiting caused by this kind of allergy, different clinical departments actually have quite different treatment ideas. Most colleagues in the emergency department believe that as long as there is no difficulty in breathing or confusion after vomiting, it is not considered an emergency. Just take some warm oral rehydration salt III at home and rest for half a day to recover. After all, vomiting is equivalent to directly clearing the allergens from the digestive tract, and the probability of subsequent severe allergies is low. But most of our allergy doctors are more conservative. They generally recommend that even if you feel comfortable after vomiting, it is best to stay in the hospital for 2 hours. I have met a patient who is allergic to cashew nuts before. After vomiting, he felt that he was fine and went home. However, he suddenly started to wheeze on the way. When he was sent to the hospital, his larynx was swollen and he was almost intubated. Delayed allergic reactions are the most terrifying.

I also encountered related pitfalls two years ago. In the spring, I was allergic to dust mites. I felt uncomfortable in my stomach after sneezing more than a dozen times. I grabbed half a box of freeze-dried pineapples that had not been soaked for long enough and ate them. Within ten minutes, I started vomiting, including the fat beef rice I had eaten the night before. At that time, I thought stupidly and thought about taking a loratadine tablet to suppress it. Within two minutes of swallowing the medicine, I choked it out along with stomach acid, coughing until I shed tears. Later I found out that the esophageal cardia was still in a relaxed state just after vomiting. Not to mention the medicine, even drinking warm water in a hurry can easily cause vomiting again. I had to wait at least 20 minutes for the burning sensation in my throat to subside before it was safe to take sips of warm liquid.

Oh, by the way, some people say that after vomiting due to allergies, you should actively induce vomiting and vomit out all the remaining allergens. It is completely unnecessary. Your body has spontaneously vomited everything it can. However, artificial vomiting will damage the esophageal mucosa, and in severe cases, it can cause cardiac tear, which is not worth the gain. Don't believe the old man who says that you can just drink light salt water after vomiting. Ordinary light salt water has the wrong electrolyte ratio, and it will be useless if you vomit more than three or four times. If you really vomit more than three or four times, your mouth will be dry and the skin will peel off, your urine will become less, and your eyes will even turn black when you stand up. Go directly to the drugstore to buy Oral Rehydration Salt III, follow the instructions and take a small sip. It will work better than any other home remedy. Many people think that vomiting due to allergies is a sign of "detoxification", so they turn around and drink iced milk tea or cold porridge to suppress the sour taste in the stomach. This is purely a fool's errand. The digestive tract has just experienced a round of violent contractions, and the mucous membranes are all congested. Once ice, sweet, and gassy things enter, it will only stimulate smooth muscle contraction again, and may cause another round of vomiting.

Of course, don’t take it too seriously. There are two danger signs that you really need to remember: one is that your throat becomes tight after vomiting, your voice suddenly becomes hoarse, and you can hear a hissing whistle when you breathe. Don’t hesitate to call 120 immediately. This is a precursor to laryngeal edema. Severe cases can be suppressed in ten minutes.； The other is that after vomiting several times, I didn't urinate for three or four hours in a row, and my consciousness was a bit dazed. This was a sign of severe dehydration. I had to go to the hospital for infusion to replenish electrolytes. Don't bear it.

To be honest, allergies are different for everyone. Some people get a rash after touching a little allergen, and some people vomit after eating half a plate. It’s your turn. Don’t frighten yourself by blindly searching Baidu, and don’t insist on thinking, “Isn’t it just vomiting? It’s not a big deal.” If you are not sure, go to the hospital and spend the registration fee to buy a reliable one, which is better than anything else.