Food allergies occur as an inherited or acquired adverse reaction to certain foods by the immune system. Upon ingesting the food, symptoms may appear immediately or up to several hours later. Sometimes the symptoms appear several days later.
Causes of Food Allergy
Any food substance can be the cause of an allergic reaction. The most common foods are: cow's milk, egg whites, wheat, soybeans, peanut, fish, tree nuts, shellfish, melons, sesame and sunflower seeds, and chocolate.
Signs and Symptoms of Food Allergy
Symptoms of food allergy may include: swelling of hands, feet, face and lips, nausea, vomiting, asthma, cough, abdominal pain, flatulence, bloating, skin rash, hives, itching, diarrhea, hay fever, migraine headaches, and fainting.
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Medical Content Last Updated on 07/12/2008
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