How long does it take for food allergies to subside?

There is no uniform time for food allergy to subside. Mild cases may fully recover within a few hours to 3 days, while more severe cases may take 1 to 2 weeks. If it causes acute and severe cases such as laryngeal edema and anaphylactic shock, there is no possibility of waiting for self-healing to subside, and the patient must be sent to a doctor for emergency treatment as soon as possible.

A while ago, a friend ate half a plate of unprocessed crayfish. That night, he developed a small scattered red rash on his arm. It was so itchy that he couldn't sleep. After taking an antihistamine, he took a long nap. When he woke up the next morning, the rash was completely gone, leaving no traces. This is a typical mild form of immediate allergy. The immune system reacts quickly and evacuates quickly.

Last week, I met a parent who brought his baby for consultation. He said that the baby developed urticaria after eating cashew nuts. After almost 10 days, he still had two red lumps from time to time. After careful questioning, he found out that the old man in the family thought that "the baby is just greedy and will be fine if he eats a little bit." He secretly fed the baby two mouthfuls of soufflé with chopped cashew nuts. This was equivalent to the immune system having just taken a breather and being pulled back to fight. The allergic reaction will naturally come and go again and again.

Currently, there are different clinical judgments on the time it takes for mild allergies to subside. Most general practitioners believe that as long as they avoid allergens in time and use anti-allergic drugs regularly, they can basically achieve effective relief within 72 hours. However, some allergists have pointed out that some patients with delayed food allergy have a slow immune response and allergic reactions can last a week or even longer. If they also have underlying diseases such as atopic dermatitis and asthma, the course of the disease will be longer.

In fact, it is easy to understand by analogy. An allergy attack is like a thief entering your home. The thief only wandered around the door and was chased away by the security guard. The house can be restored to its original state within ten minutes of cleaning.； If the thief has broken into the house and messed up the house, or even broken the furniture, then it will naturally take a lot of effort to clean it up. If the thief also brought a murder weapon, then you have to call the police for help first, and there is no way to clean it up on your own.

If the symptoms have not subsided for more than 3 days after the allergy, and you even feel chest tightness and throat tightness, don't wait for it to subside. Go to the hospital to see a doctor. After all, everyone's immune status is very different, so don't gamble with your body.