For bites or stings from these creatures refer to pressure immobilisation first aid.
Anaphylaxis is a severe allergic reaction that can occur in sensitive individuals from exposure to any chemicals foreign to the body, including bites and stings, plants, or medications. Parts of the body, for example the face or throat, swell up so much that the patient can't breathe. In severe cases the patient may go into shock within a few minutes and the heart can stop. For any patient who shows signs of anaphylaxis, call 000 for an ambulance, and have the patient taken immediately to the emergency department of the nearest hospital.