Food allergy symptoms are very diverse and can reach any organ or body part. But none of these symptoms are specific to food allergic reactions as they may occur with other types of allergy.
Distinguishing true food allergy
Food allergy symptoms is specific to one or more foods or food components. This reaction involves the immune system, become intolerant to a substance, will produce a cascade reaction mediated by the production of IgE antibodies.
Food allergies are differentiated from food intolerances (such as lactose intolerance or gluten intolerance) involving the metabolism (lack of an enzyme capable of digesting a protein or substance contained in food) but which are not involve the immune system.
Food aversions are also to be discarded, and the consumption of foods high in histamine that is to say, that stimulate the release of histamine giving relatives symptoms of food allergies. Among foods include chocolate, strawberries, fish (especially canned) and crustaceans.
The allergist is the specialist who can confirm whether or not a food allergy.
Food Allergy: Symptoms and events
Symptoms of food allergy are not specific to this type of allergy as they can occur in other types of allergy. Sometimes they are difficult to appreciate or to associate with taking this or that food because not only several symptoms or different symptoms are possible in the same person but because of possible cross allergy.
The frequency of each type of symptom is difficult to assess but skin reactions appear to be more frequent as anaphylactic shock, systemic reaction daunting, fortunately infrequent: it concerns 1% of the population across all allergies.
Symptoms and manifestations by devices
Skin and mucous membranes: eczema, urticaria, angioedema (swelling of the lips, mouth, face, tongue and / or throat), rash or other skin rashes, itching, allergic conjunctivitis.
Respiratory: asthma, rhinitis, nasal congestion, sneezing, chronic cough.
Gastrointestinal disorders: diarrhea, vomiting, nausea.