Food sensitivities differ from food allergies in a few ways and they are similar in a few ways as well. First, the similarities: both cause and inflammatory reaction and then and immune system response. This produces a symptom such as skin rash, itchiness, headaches, intestinal symptoms, pain, etc. Both can cause symptoms that range from mild to severe. Now the differences: The amount of time for reactions to take place are different. Food allergies can cause a reaction that occurs immediately or up to 2 hours after your body is exposed to it. Food sensitivity reactions occur anywhere form 2 hours up to a week after exposure. The delay in the reaction time to food sensitivities make it more difficult for a patient to identify which food could be causing the problem. With food sensitivities reactions can be severe but on-life threatening. Food allergies however can cause life threatening reactions such as anaphylactic shock(the closing of your airways). When diagnosing food allergies, skin testing and/or blood analysis of the antibodies known as IgE are examined. Fod sensitivities are diagnosed by food elimination diets and/or blood analysis and IgG antibodies. When dealing with food sensitivities it has been found that applied kinesiology can be very helpful in identifying reactive foods.