The simple procedure to detect the food allergen is to put the individual on a very simple elimination diet, which consists of a few basic foods that are almost never associated with food allergies or intolerance. Symptoms are monitored for several weeks, and foods are gradually added back to the diet. If symptoms then occur, more sophisticated tests are used to determine which kind of problem is present.

For example, a test known as double blind challenge or provocation test, opaque capsules containing the suspected substance are alternated randomly with a non-active substance and eaten with the elimination diet. If the person always responds to the presence of substance, even when he is unaware of it, with asthma, eczema, allergic rhinitis hives or other physical reactions, the possibility of his having a true allergy or physiological intolerance is strengthened. So, the best thing is to detect the food allergens and eliminate them from the diet.

Milk and milk products: Constipation, diarrhea, and vomiting are the most common. In rare instances hives can occur.

Egg: Rashes, hives, and swelling is the most common. Asthma attacks and eczema are also seen in some people.

Fish: Rashes, hives, and red itchy eyes. Can trigger asthma attach or runny nose.

Wheat: Diarrhea and stomach upset. Migraine.

Peanuts: Stomach upset and breathing problems. Possible anaphylaxis.

Fruits: Facial rash or hives, itching, or a tingling sensation in the mouth.

Chocolate: Rashes or hives.

Almonds: Extreme breathing problems.

Because these problems can affect the growth and health, they need to be identified early. If you have or if your doctor thinks you have a possibility of a severe reaction to foods--such as asthma attaches severe hives, or anaphylactic reactions---you should always wear a medical alert band.