HealthInfo Canterbury

Anaphylaxis (severe allergy)

Mate pāwera kino

Anaphylaxis is a severe life-threatening allergic reaction. Causes include insect bites, bee stings, food (for example, nuts), and medications. Anaphylaxis tends to happen in just a matter of minutes. Signs and symptoms to look out for include:

tongue swelling swelling or tightness in the throat difficulty breathing – may be noisy or wheezy (whistling sound)

difficulty talking collapse loss of consciousness floppy and pale (young children).

First aid

• Lay the person flat on the ground or if they're having trouble breathing, sit them down.
• Check if the person has an adrenaline injection pen (for example, an EpiPen). If they do and can't use it themselves, follow the instructions below for using one.
• Call for help – stay with the person and call 111 or if someone else is available, ask them to call 111.
• Remove any suspected causes of the allergic reaction.
• Look for a medical alert bracelet or necklace.

How to use an adrenaline injection pen (for example an EpiPen)

An EpiPen is an automatic adrenaline injector for the emergency treatment of anaphylaxis. Medical training isn't needed to use one.

• Form a firm fist around the pen and pull off the blue safety cap.
• Hold the leg still and place the orange end against the outer mid-thigh (with or without clothing).
• Push down hard until you hear or feel a click and hold in place for three seconds.

Watch this short video on how to use an adrenaline autoinjector (this is an Australian video. In New Zealand phone 111 for an emergency).

You can get an adrenaline injection pen prescribed by your doctor, nurse prescriber or pharmacist prescriber or you can buy one directly from a pharmacy without a prescription.

People at risk of anaphylaxis who meet certain eligibility criteria can get free pens. Talk to your healthcare provider to check if you're eligible.

What to do if you're at risk of anaphylaxis

If you're at risk of anaphylaxis, talk to your general practice team. You can ask them to help you complete an action plan that you can then keep with your adrenaline. The practice nurses at your general practice can give you and your whānau (family) training in how to use an adrenaline injection pen.

  HealthInfo recommends the following pages

• Australasian Society of Clinical Immunology and Allergy (ASCIA) – Anaphylaxis resources

  Resources about anaphylaxis, including action plans, checklists and information about adrenaline autoinjectors.

• Canterbury DHB – Adrenaline Autoinjectors

  A factsheet about adrenaline autoinjectors including where to buy one and how to store it.

• Medsafe – Severe Allergic Reactions (Anaphylaxis) to Medicines

  A downloadable pdf about allergic reactions to medicines and what to do if you experience one.

Written by HealthInfo clinical advisers. Last reviewed July 2022.

Sources

Page reference: 48946

Review key: HIALL-38559