A food allergy is caused by the body producing immunoglobin E or IgE antibiodies to a certain food. It is an immune system reaction that occurs after consumption of a particular food.

Whitefish refers to round- or flat-shaped fish with fins that live near or on the bottom of sea or lakes that are white in color. This includes cod, haddock, halibut, haddock, whiting, bass, hake, flounder, cat fish, pollock, perch and whiting.

A food allergy to papaya occurs when your immune system mistakenly identifies a protein found in the skin and flesh of the papaya as a threat and creates antibodies in a reaction against it. These antibodies cause your body to exhibit certain symptoms in an attempt to flush out the offending protein.

Gluten intolerance, also called celiac disease, is an autoimmune disorder that damages the small intestine and causes the malabsorption of vitamins and other nutrients. Celiacs have a chronic reaction to glutens found in cereals such as wheat, barley and rye, and oats when contaminated with these other grains.

Food allergy affects approximately 5 percent of children and 4 percent of adults in the United States, according to the National Institute of Allergy and Infectious Diseases.

Keeping birds as pets may seem like a harmless hobby, but allergies to bird feather dander and bird fecal matter present health risks in the form of allergies. While more people develop allergies to cats and dogs, allergic reaction to birds is commonplace.

One percent of the U.S. population reports an allergy to peanuts or tree nuts, including cashews, according to a study published in the 2012 issue of “The Journal of Allergy and Clinical Immunology.” Symptoms of cashew allergy involve the skin, gastrointestinal and respiratory systems.

According to The University of Maryland Medical Center, food allergies are defined as the body's immune system reacting to generally harmless substances in certain foods. Most food allergies are a result of a genetic predisposition to sensitivity to a certain food item, and allergies normally resolve in adulthood.

A food allergy refers to an abnormal immune system response triggered by the interaction of food-specific proteins and antibodies against them. Certain foods are more likely to trigger allergies than others. An allergy to citrus fruits is relatively uncommon, as are allergies to most fruits and vegetables.

A full body rash that occurs after you eat is a serious sign of a severe allergic reaction. You need to call your doctor or 911 immediately to prevent further complications. Around 90 percent of all food allergies are related to fish, shellfish, soy, tree nuts, wheat, peanuts, milk and eggs.

A common symptom of food allergies is sinus problems. The sinuses are cavities in your head, located directly behind your nose and eyes that help to filter unwanted particles from the air you breathe in. They are made of sensitive soft tissue and lined with mucus membranes that keep the tissue soft and moist.

Allergy to egg is one of the most common food allergies in infants. Allergic reaction to egg usually becomes noticeable when the baby is about 10 months old, according to Dr. Ralf Heine in the March 2006 issue of “Current Allergy and Asthma Reports.