Food Allergy.

When you have an allergic reaction after eating certain types of food, it means your immune system is responding to the substance perceived by the body as a harmful allergen. Massive amounts of antibodies are produced, binding with both the allergens and mast cells (a certain type of cell containing chemicals). When the antibodies come into contact with these mast cells, they alter the structure of its membranes, causing the various chemicals inside to leak out. One of the chemicals is histamine, which is a major player in inflammation of surrounding tissue.
The symptoms of food allergy could range from mildly inconvenient to uncomfortable to complete collapse of the body, a condition known as anaphylaxis. Many people have died or have been brought to emergency rooms as a result of anaphylaxis brought about by violent allergic reactions to certain types of food.


Common signs of food allergy include the following:
Tingling sensation in the mouth
Swelling of the tongue and the throatDifficulty breathingHives
VomitingAbdominal cramps

Diarrhea
Drop in blood pressureLoss of consciousnessDeath (extreme cases)

Typically, these symptoms appear within minutes or two hours after the person has eaten the food he or she is allergic to.
How to handle food allergies depends on the type of food, the vigor of the reaction among other factors. Some doctors recommend the best method is to avoid eating the food. If you’re allergic to certain types of food, then you ought to practice strict avoidance of these foods. Having a series of practical tips to manage a food allergy is helpful for when you are away from home and must eat food that you did not prepare.

Food allergy is largely symptomatic, which means that whatever medications or treatment methods are available, they are usually to prevent the onset or for treatment of the symptoms.


Epinephrine, also called "adrenaline," is the medication of choice for controlling severe reactions.


While any food can cause allergies, 90% of all food allergic reactions are caused by:PeanutEggMilkShellfishWheatTreenutsSoyFish
In the case of a wheat allergy, it is important to have a professional analysis done to confirm the allergy. Sometimes, what may appear to be a wheat allergy is a case of food intolerance, so to be accurate, testing is in order.

Likewise, it is important to distinguish a gluten allergy, which includes wheat, barley and oats and other gluten-protein foods, from gluten intolerance. Gluten intolerance often causes painful symptoms, like migraines, rashes and bloating is rarely life-threatening. A gluten allergy can be much more severe.

A peanut allergy is one of the most common, serious, and potentially fatal food allergies. In a survey conducted by the Food Allergy and Anaphylaxis Network, the prevalence of peanut allergy in both adults and children alike has doubled up over a period of five years. Peanuts are actually legumes but it is probably unnecessary to eliminate other legumes unless there is good reason to suspect that they cause problems or your doctor tells you to avoid them.
Egg-related food allergy is often mild. However, there are rare cases where egg can trigger anaphylaxis. Food labels must be thoroughly scrutinized for products containing egg or albumen. It should also be noted that well-cooked eggs (as in cakes) are generally harmless. But raw and lightly cooked eggs can cause allergic reactions.