Food Allergies, Intolerances, and Sensitivities
Published on Nov 20, 2015
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Food Allergies, Intolerances, and Sensitivities
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Allergy: An immunologic response to an allergen that results in reproducible symptoms that occur immediately (within a few hours) and with every exposure
. May be characterized by:
• Hives
• Swelling
• Difficulty breathing
• Difficulty swallowing
• Vomiting
• Low blood pressure
• Anaphylaxis
• Death
Photo by NIAID
Intolerance: A non-immunologic response to a substance (food) that causes gastrointestinal symptoms with exposure. The reaction is not always reproducible, may be quantity related, can vary over time, and not always immediate
. May be characterized by:
• Bloating
• Gassiness
• Heartburn
• Vomiting
• Constipation
• Diarrhea
Photo by return the sun
Food Sensitivity
Photo by Great Beyond
Sensitization: The detection of IgE (positive test result) towards a specific allergen that does not take the history into account
Can be detected with:
Skin prick
Intra-dermal test
Blood test
Ig: Immunoglobulin, or antibody, which forms part of the body’s immune defense system
Photo by Pulmonary Pathology
