Anaphylaxis is a severe, potentially life threatening allergic reaction to a foreign body (allergen) often occurring within seconds to one hour after exposure. Symptoms may include widespread hives (urticaria), itching, sensation of lump in the throat, constriction of the airways, swollen tongue, wheezing, weakness and collapse.
Common causes include:
- Food – e.g. peanuts, tree nuts, seafood, eggs, milk and sesame
- Medication – e.g . Penicillin
- Bee stings
Diagnosis is based on history, Skin testing, sometimes combined with blood tests ( specific IGE ) The need for adrenalin injections is based on a combination of the above.