Food allergy is an abnormal response to a food triggered by your body's immune system. Allergic reactions to food can sometimes cause serious illness and death. Tree nuts and peanuts are the leading causes of deadly allergic reactions called anaphylaxis.
For someone with a food allergy, eating or swallowing even a tiny amount of a particular food can cause symptoms such as skin rash, nausea, vomiting, cramping, and diarrhea. Because the body is reacting to something that is otherwise harmless, this type of allergic reaction is often called a hypersensitivity reaction.
Do infants and children have problems with food allergy?
The Answer is Yes: Allergies to milk or soy formula (a milk- substitute made from soybeans) can occur in infants and young children. These early allergies sometimes do not involve the usual hives or asthma, but rather can cause infantile colic, and perhaps blood in the stool or poor growth.
In adults, the foods that most often trigger allergic reactions include:
Problem foods for children are eggs, milk (especially in infants and young children) and peanuts. Symptoms
A person with a food allergy can have symptoms beginning as soon as 2 minutes after eating the food, but reactions may take 1-2 hours to appear. Occasionally, symptoms abate quickly, only to recur in 3-4 hours.
Food allergy is treated primarily by dietary avoidance. Avoiding the offending allergen in the diet is the primary treatment of food allergy. Once a food to which the patient is sensitive has been identified, the food must be removed from the diet.