Food intolerance/Allergy 

• Food allergies are mediated through the immune system and can be classified as
  • IgE-mediated
  • non-IgE-mediated
  • mixed IgE/non-IgE-mediated

nonallergic food hypersensitivities

• Gastrointestinal disorders (eg. structural abnormalities, reflux, peptic ulcer disease, pancreatic insufficiency)
• Toxic reactions (eg. contamination/infection/toxins) 
• Intolerances (eg. pharmacologic agents such as caffeine)
• Neurological reactions (eg. auriculotemporal syndrome)
• Psychological reactions (eg. food phobias, food aversions)
• Accidental contaminations (eg. pesticides, antibiotics [if allergy present])