Symptoms usually start as soon as a few minutes after eating a food and as long as two hours after. In some cases, after the first symptoms go away, a second wave of symptoms comes back one to four hours later (or sometimes even longer). This second wave is called a biphasic reaction.
People also ask, do food allergies ever go away?
As it is, there is no magic pill, potion, or trick that can make food allergies go away. Yes, some children will have their food allergies diminish and disappear and some children will outgrow them. While waiting for Houdini to make them go away for good, there are support and resources that can help.
Is Benadryl good for food allergies?
In these cases, OTC or prescribed antihistamines such as diphenhydramine (Benadryl) may help reduce symptoms. These drugs can be taken after exposure to an allergy-causing food to help relieve skin redness, itching, or hives. However, antihistamines cannot treat a severe allergic reaction.