One of the most important steps in diagnosing food allergy is obtaining a thorough medical history. Standard skin and blood tests are performed to detect certain types of allergies.

Food allergy affects up to 6-8% of children under 3 years of age, and around 4% of adults have a food allergy. Studies have shown that, among food allergies, peanut allergy is the most common. Many people are becoming aware of food allergies, and the topic has become a public concern. This document will help you understand food allergies, their possible causes, and how they can be diagnosed and treated.

Also Read: Understanding Allergic Rhinitis: Types and Medical Remedies

About Food Allergy

An allergy occurs when the body’s immune system reacts to a substance called an allergen in the environment, which is usually harmless. These allergens may include food, pollen, dust mites, and animal dander. The most common type of allergic reaction includes allergic conjunctivitis, which is one of the most commonly reported allergic diseases caused by pollen or mold spores.

Another common allergy is a food allergy or food hypersensitivity. A food allergy occurs only when the immune system is involved in causing the reaction. The food you are allergic to can be called a food allergen, which is the part of food that stimulates the immune system of food allergic individuals. A food item contains multiple food allergens; most are likely proteins rather than fats or carbohydrates. An individual with a food allergy produces a high amount of IgE (an antibody in the immune system). When such people eat a certain food, their body’s immune system is stimulated by the food allergens to make IgE specific to that food. When IgE on the surface of basophils and mast cells binds to food allergens, these specialised immune cells trigger allergic reactions by releasing prostaglandins, histamine, and leukotrienes. These mediators are powerful compounds that cause allergic reactions.

Symptoms of Food Allergy

A limited number of foods, such as eggs, shellfish, milk, peanuts, soy, fish, walnuts, and wheat, cause most allergic reactions. Food allergy symptoms and signs involve the gastrointestinal, respiratory, and skin systems. These allergic symptoms occur alone or in combination with other symptoms. A food allergy begins within minutes to a few hours after eating the allergen. In sensitive people, simply touching or inhaling the food can trigger an allergic reaction.

Common food allergy symptoms and signs include swelling or itching of the lips or swelling in the mouth or throat. Ingestion of a food allergen can cause vomiting, nausea, diarrhea, and cramping. One may also experience eczema, itching, hives, and skin redness. Shortness of breath, a runny nose, and sneezing are other symptoms of a food allergy.

Diagnosis of Food Allergy  

If you are diagnosed with a food allergy, your health care specialist will suggest an allergy clinic or center for testing. These tests are required depending on the type of allergy. If you have IgE-mediated food allergy, you will probably be given a skin prick test or a blood test to determine your food allergies. In cases of non-IgE-mediated food allergy, a food elimination diet is preferred.

1. Skin prick test – During this test, drops of certain food extracts are placed on the arm of an individual with an allergic food. Your health care specialist will then pierce the skin with a small lancet to allow the food allergen to come into contact with the cells of the immune system. Redness, swelling, and itching are the indicators of a positive reaction. This is a painless procedure.
2. Blood test – A blood test is performed to measure some allergic antibodies in the bloodstream. It is an alternative to a skin-prick test.
3. Food elimination diet – In this, the suspicious food items are withdrawn from the diet for two to six weeks. After this period, the food items are then reintroduced. If the allergic reactions disappear when the food is eliminated but return when it is reintroduced, this indicates a food allergy.
4. Rotation diet – In this diet, each food eaten on a particular day is not eaten until the fourth day. It helps you to control food allergies in allergy-prone individuals. Rotating foods helps prevent struggles with repetitive food stressors. Keep rotating your food items to maintain your tolerance to them.
5. Alternative tests –There are some more tests available that promise to detect different types of allergies, but they should be avoided:1.Kinesiology testing is a clinical test used to detect food allergies and is performed by evaluating your muscle response.
   2.Alternative blood tests or Leukocytosis tests) – During this test, a check is done for the swelling of white blood cells to detect food allergies.
   3.These alternative tests are unproven, and independent reviews have found them unreliable; therefore, they should be avoided.

Also Read: The Ultimate Allergy Survival Guide

Allergy medicines

Mild allergies often go away in a few hours to days, but moderate to severe allergies require medical attention, and doctors often prescribe medicines to treat them. Following the prescription medicines helps you achieve the desired results. AllDayChemist, one of the leading online pharmacies, offers authentic allergy medicine supplies to your doorstep at affordable prices. Buy allergy medicine online to save the best on your medicine purchase.