This article waslast modified on
10 July 2017.

A life threatening, severe allergic reaction which occurs over a short period of time.  Triggers include bee stings and drugs such as penicillin.  Initial symptoms can include hives, wheezing and low blood pressure which can lead to collapse and even death. Patients at risk may be given self-injectable adrenaline for use in an emergency.  This treatment is only a holding measure and an ambulance should be called.