Type I Hypersensitivity (Protein Allergy)

An lgE-mediated immediate hypersensitivity reaction, characterized by contact urticaria (hives), angioedema, rhinitis, respiratory complications, drop in blood pressure and rapid heart rate which may potentially progress to anaphylaxis. Severe cases can be fatal. Examples include Type I allergies to: penicillin, peanuts, strawberries, bee stings and natural rubber latex proteins.