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Food allergy is an abnormal response to a food triggered by your body's immune system.
In adults, the foods that most often trigger allergic reactions include fish, shellfish, peanuts, and tree nuts, such as walnuts. Problem foods for children can include eggs, milk, peanuts, tree nuts, soy, and wheat.
The allergic reaction may be mild. In rare cases it can cause a severe reaction called anaphylaxis. Symptoms of food allergy include
- Itching or swelling in your mouth
- Vomiting, diarrhea, or abdominal cramps and pain
- Hives or eczema
- Tightening of the throat and trouble breathing
- Drop in blood pressure
Your health care provider may use a detailed history, elimination diet, and skin and blood tests to diagnose a food allergy.
When you have food allergies, you must be prepared to treat an accidental exposure. Wear a medical alert bracelet or necklace, and carry an auto-injector device containing epinephrine (adrenaline).
You can only prevent the symptoms of food allergy by avoiding the food. After you and your health care provider have identified the foods to which you are sensitive, you must remove them from your diet.
NIH: National Institute of Allergy and Infectious Diseases
- Food Allergies (American Academy of Family Physicians)Available in Spanish
- Food Allergy (American Academy of Allergy, Asthma, and Immunology)
- Food Allergy (Mayo Foundation for Medical Education and Research)
- Food Allergy
(National Institute of Allergy and Infectious Diseases) - Food Allergy: An Overview (National Institute of Allergy and Infectious Diseases) - PDF
- Food Allergy: Tips to Remember (American Academy of Allergy, Asthma, and Immunology)Available in Spanish
- Allergy and Asthma Sufferers Beware as Holiday Season Kicks in (11/21/2015, HealthDay)
- Don't Assume Siblings Will Have Food Allergies, Too (11/05/2015, HealthDay)
- Halloween Can Be a Fright for Kids with Food Allergies (10/27/2015, HealthDay)
- Allergy Blood Testing (American Association for Clinical Chemistry)
- Allergy Skin Tests (Mayo Foundation for Medical Education and Research)
- Allergy Tests: When You Need Them and When You Don't (ABIM Foundation)
- Food Allergy Diagnosis (National Institute of Allergy and Infectious Diseases)
- Food Allergy Symptoms and Diagnosis (Beyond the Basics) (UpToDate)
- Getting the Facts on Food Allergy Testing (American Academy of Allergy, Asthma, and Immunology) - PDF
- Reasons to Do Food Challenges (National Jewish Health)
- Symptoms (Food Allergy Research & Education)
- Food Allergies: Reducing the Risks (Food and Drug Administration) - PDF
- Preventing and Treating Food Allergy (National Institute of Allergy and Infectious Diseases)
- Food Allergy Treatment and Avoidance (Beyond the Basics) (UpToDate)
- Treatment and Managing Reactions (Food Allergy Research & Education)
- Emotional and Social Issues (Food Allergy Research & Education)
- Guidelines for the Diagnosis and Management of Food Allergy in the United States (National Institute of Allergy and Infectious Diseases)
- Have Food Allergies? Read the Label (Food and Drug Administration)
- Managing Food Allergies at Home (Food Allergy Research & Education)
- Tips for Managing Food Allergies (Food Allergy Research & Education)
- Traveling with Food Allergies (Food Allergy Research & Education)
- Eosinophilic Esophagitis (EE) or (EoE) (American Academy of Allergy, Asthma, and Immunology)
- Food Intolerance vs. Food Allergy: What's the Difference? (Mayo Foundation for Medical Education and Research)
- Is It Food Allergy or Food Intolerance? (National Institute of Allergy and Infectious Diseases)
- Related Conditions (Food Allergy Research & Education)
- Egg Allergy (Nemours Foundation)
- Fish Allergy (Food Allergy Research & Education)
- Fish Allergy (Nemours Foundation)
- Milk Allergy (Food Allergy Research & Education)
- Milk Allergy (Mayo Foundation for Medical Education and Research)
- Other Allergens (Food Allergy Research & Education)
- Peanut Allergy (Food Allergy Research & Education)
- Peanut Allergy (Mayo Foundation for Medical Education and Research)
- Shellfish Allergy (Food Allergy Research & Education)
- Shellfish Allergy (Nemours Foundation)
- Soy Allergy (Food Allergy Research & Education)
- Soy Allergy (Mayo Foundation for Medical Education and Research)
- Tree Nut Allergies (Food Allergy Research & Education)
- Wheat Allergy (Food Allergy Research & Education)
- Wheat Allergy (Mayo Foundation for Medical Education and Research)
- Virtual Allergist (American Academy of Allergy, Asthma, and Immunology)
- Facts and Statistics about Food Allergies (Food Allergy Research & Education)
- Food Allergy (National Institute of Allergy and Infectious Diseases)
- Food Allergy Among U.S. Children: Trends in Prevalence and Hospitalizations (National Center for Health Statistics)
- Hope for Beating Egg Allergy (National Institutes of Health)
- Impact of Food Allergy on Asthma in Children (American Academy of Allergy, Asthma, and Immunology)
- ClinicalTrials.gov: Egg Hypersensitivity (National Institutes of Health)
- ClinicalTrials.gov: Food Hypersensitivity (National Institutes of Health)
- ClinicalTrials.gov: Milk Hypersensitivity (National Institutes of Health)
- ClinicalTrials.gov: Nut Hypersensitivity (National Institutes of Health)
- ClinicalTrials.gov: Peanut Hypersensitivity (National Institutes of Health)
- ClinicalTrials.gov: Wheat Hypersensitivity (National Institutes of Health)
- American Academy of Allergy, Asthma, and Immunology
- Find an Allergist/Immunologist (American Academy of Allergy, Asthma, and Immunology)
- Kids with Food Allergies
- National Institute of Allergy and Infectious Diseases
- Food Labels (Food Allergy Research & Education)
- Asthma and Food Allergies (American Academy of Pediatrics)
- Egg Allergy (Nemours Foundation)Available in Spanish
- Food Allergies (Nemours Foundation)Available in Spanish
- Infant Allergies and Food Sensitivities (American Academy of Pediatrics)
- Ingesting Baked Egg May Help Children Outgrow Egg Allergy (American Academy of Allergy, Asthma, and Immunology)
- Milk Allergy in Infants (Nemours Foundation)Available in Spanish
- Nut and Peanut Allergy (Nemours Foundation)
- Severe Food Allergy Reactions in Kids (National Institutes of Health)
- Egg Allergy (Nemours Foundation)
- Food Allergies (Nemours Foundation)Available in Spanish
- Food Allergies in Schools (Centers for Disease Control and Prevention)
- Milk Allergy (Nemours Foundation)Available in Spanish
- Nut and Peanut Allergy (Nemours Foundation)Available in Spanish
- Shellfish Allergy (Nemours Foundation)
- Allergy testing - skin Available in Spanish
- Anaphylaxis Available in Spanish
- Food Allergies: Reducing the Risks (Food and Drug Administration) - PDF
- Food allergy Available in Spanish
New on the MedlinePlus Food Allergy page:
12/23/2015 03:04 PM EST
Source: National Institutes of Health - 
12/23/2015 03:04 PM EST
Source: National Institutes of Health -
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