Normally, the immune system elicits a response for body invaders such as bacteria, toxins, and viruses. But for some people, the immune response is a result of some food substance introduced by ingestion.  Many people suffer from food allergies. A food allergy is a very exaggerated response of your immune system brought about by certain food items such as nuts, eggs, milk, and even chocolates. Some symptoms of food allergies are hoarseness of the voice, hives, swelling, wheezing, itching sensation, hard time swallowing, diarrhea, abdominal pain, fainting, runny nose, nausea, nasal congestion, cramps (stomach), and vomiting. Wheezing and difficulty in breathing are caused by the inflammation of the air passages. Difficulty in swallowing and hoarseness of the voice may be brought about by the swelling of the oral cavity and esophageal area.

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