First, let's talk about allergy to food. The most common types of foods that a person may develop an allergy to include eggs, wheat, cheese, nuts, shellfish, chocolate, tomatoes, corn and berries. In fact, almost any food or combination of certain foods can cause allergic symptoms. Often, food hypersensitivity is seen in people who just LOVE certain foods, chocolate and cheeses are two examples. Some of the most common symptoms of allergy to foods include stomach and digestive problems, behavioral changes in children, headache and rashes.
Rashes can occur over a small part of the body and spread.
Rashes and headaches may occur immediately after eating or appear after some time. Severe shock reactions may also occur. Sometimes a combination of certain foods can cause a reaction such as a fruit and nut cake or a casserole, when the individual ingredients alone do not have an effect. Thus, if you have sensitivity to pollen or to house dust then your food allergy may be more reactive than if you ate just the food. One of the mysteries regarding food allergy is the fact that symptoms may occur either immediately or several hours after eating.