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Allergies | Food Sensitivity

Food allergies and other types of food hypersensitivities affect millions of Americans and their families. Food allergies occur when the body's immune system reacts to certain proteins in food. Food allergic reactions vary in severity from mild symptoms involving hives and lip swelling to severe, life-threatening symptoms, often called anaphylaxis, that may involve fatal respiratory problems and shock.

​While any food can cause an adverse reaction, eight types of food account for about 90 percent of all reactions:
  • Eggs
  • Milk and Dairy
  • Peanuts
  • Tree nuts
  • Fish
  • Shellfish
  • Wheat
  • Soy
  • Sesame
Symptoms of an allergic reaction may involve the skin, the gastrointestinal tract, the cardiovascular system and the respiratory tract. They can surface in one or more of the following ways:
  • Vomiting and/or stomach cramps
  • Hives
  • Shortness of breath
  • Wheezing
  • Repetitive cough
  • Shock or circulatory collapse
  • Tight, hoarse throat; trouble swallowing
  • Swelling of the tongue, affecting the ability to talk or breathe
  • Weak pulse
  • Pale or blue coloring of skin
  • Dizziness or feeling faint
  • Anaphylaxis, a potentially life-threatening reaction that can impair breathing and send the body into shock; reactions may simultaneously affect different parts of the body (for example, a stomachache accompanied by a rash)

Seasonal Allergies

Seasonal allergies, like other types of allergies, develop when the body’s immune system overreacts to something in the environment, usually during spring, summer or fall when certain plants pollinate.
Symptoms of seasonal allergies range from mild to severe.
The most common include:
  • sneezing
  • runny or stuffy nose
  • watery and itchy eyes
  • itchy sinuses, throat, or ear canals
  • ear congestion
  • postnasal drainage
Less common symptoms include: 
  • headache
  • shortness of breath
  • wheezing
  • coughing
Do you Have Allergies? 


​Allergy Picture Book

If you need more specialized care, your doctor may recommend allergen immunotherapy. This helps your immune system build up a tolerance against an allergen by exposing you to the irritant in small doses. Allergen immunotherapy can be given in two ways:
  • Subcutaneous injections: Once your doctor determines what you’re allergic to, they administer a series of shots containing those specific allergens. The shots are given in the doctor’s office over many months or years, usually in the arm.