What is it and how to deal with it. Anaphylaxis is a severe allergic reaction - the extreme end of the allergic spectrum. The whole body is affected, usually within minutes of exposure to the allergen but sometimes after hours. Causes include food, insect stings and drugs. Nobody would necessarily experience all of these symptoms.
Some people find that the symptoms they experience are always mild.
For example, there may be a tingling or itching in the mouth - nothing more. This is not serious in itself, and may be treated with oral antihistamines. Nevertheless, it is wise in all cases to make an appointment with the doctor and seek a referral to a specialist allergy clinic. An adrenaline injection must be given, as directed, as soon as a serious reaction is suspected. Call an ambulance.