Allergy causing substances are said to be allergens. Approximately 50 million Americans have the problem of food allergy, 6 percentage of adults are affected with this food allergy, 4 to 6 percentage of children are affected by this allergic reaction to food.
Food allergy is a hereditary condition, when the parents are allergic to a particular type of food, then their children’s will also have the same allergic problem.
Food allergy symptoms can be of milder or severe, differ from person to person. The most severe condition of food allergy is Anaphylaxis, it’s a life threatening condition causes breathing difficulty and makes the allergic reaction on the entire body, causes low in blood pressure and finally heart rate gets affected.
Other symptoms of Food allergy-
- Swelling of the tongue
- Difficulty in breathing
- Circulatory collapse
- Stomach cramps
- decreased pulse rate
- Blue or pale coloration of the skin
- Continuous cough
Diagnosis of allergy-
A complete history of food particles consumed by the person prior to and after the onset of allergic reactions should be obtained; this may give some clue regarding the food item responsible for the allergy.
Water extracts of the suspected food is applied to the skin in the following ways.
1. The scratch test in which two drops of the extract are dropped on to a scratch on the back or arm of the patient.
2. Intradermal test- The suspected allergen is introduced in the form of food or chemicals and through the inside of the skin.
3. RAST test: Radio allegro sorbent test
4. ELISA Test: Enzyme linked immune sorbent assay
Because of the histamine cellular damage to the functional organs may occur and this allergy is called as the hypersensitivity.
The person should not know the food he is taken and he is given that foods and tested since psychological factors may also enable allergic and do not know the entire cause.
Oligo allergenic diet-
Less allergenic foods are given, starch, fruits, no protein in it. This can be given after identifying the allergic foods.
Elimination diet or Exclusion-
This can be single exclusion or multiple exclusion diet.
Single Exclusion diet-
A single food alone is eliminated from the diet and then if do not cause allergy it is slowly introduced in to the diet.
Multiple exclusion diet-
Two or many foods are eliminated from the diet.
Food additives can cause the food allergies, mono glutamate which is used in Chinese foods can cause allergy reactions in body. The food additives like tartrazine, sunset yellow causes this food allergy. So remember the allergy causing foods and try to eliminate those food allergens from your diet and stay away from these food allergies and remain healthier.
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