World Allergy Week (13-19 June, 2021) seeks to raise awareness of anaphylaxis, potentially life-threatening allergic reactions that cause approximately 2,400 hospital admissions and approximately 20 deaths in Australia each year. Over 4 million Australians live with allergic disease, and that number is on the rise. During this week, leading allergy organisations are promoting important resources that could save lives, whilst they eagerly await a response to the Parliamentary Inquiry into Allergies and Anaphylaxis.
“For many people, allergic reactions are uncomfortable and unpleasant, but for others they can be life threatening, culminating in anaphylaxis. Most commonly these can be caused by food, insect stings or bites or certain medications. When a person experiences anaphylaxis, a large amount of histamine and other chemical mediators are released into the body, causing an inflammatory response,” said Dr Preeti Joshi, Co-chair of the National Allergy Strategy (NAS) and paediatric clinical immunology/allergy specialist.
“There are few things more frightening than having or witnessing an anaphylaxis. The symptoms can go from bad to worse very quickly. Your blood pressure can suddenly drop, and your airways narrow, affecting breathing. If anaphylaxis isn’t recognised and treated immediately, it can result in serious complications and can even be fatal,” explains Dr Joshi. “It is important to educate yourself about what to do, or not to do, if someone is having a severe allergic reaction. We strongly recommend positioning the patient appropriately, giving adrenaline if it’s available and calling triple zero.”
Three dangerous mistakes people make when responding to anaphylaxis:
To increase community awareness this World Allergy Week, allergy experts provide insight into the common mistakes people can make when responding to severe allergic reactions.
1. Assuming it is not a severe allergic reaction because there is no skin rash or facial swelling
“Many people assume that a person can’t be having a severe allergic reaction if they don’t have a skin rash or swelling, but 1 in 6 people will have no skin symptoms at all. In fact, skin symptoms tend to be a mild to moderate allergic symptom,” said Prof Michaela Lucas, President of the Australasian Society of Clinical Immunology and Allergy (ASCIA) and clinical immunology/allergy specialist. “While it is important to be alert to those symptoms, do not ignore more serious symptoms just because there is no rash, particularly if there has been known exposure to an allergen. Breathing difficulties, tongue or throat swelling, dizziness or collapse are all possible symptoms of anaphylaxis and require immediate attention. ASCIA Action Plans and First Aid Plans for Anaphylaxis provide excellent guidance on what to do in an emergency.”
2. Delaying the administration of adrenaline (epinephrine)
“Many people still believe that taking an antihistamine will prevent a mild to moderate allergic reaction from progressing to anaphylaxis. This is not the case. Antihistamines do not treat the symptoms that affect breathing and blood pressure. Adrenaline is the first line treatment for anaphylaxis - a delay in giving adrenaline can cost a person’s life,” said Ms Maria Said, Co-chair of the National Allergy Strategy and CEO of Allergy & Anaphylaxis Australia (A&AA). “If in doubt, always give an adrenaline autoinjector, such as EpiPen®. These are emergency devices that work to reverse a severe allergic reaction. General use adrenaline autoinjectors can often be found at schools, larger hotels, convention centres or on planes.”
3. Allowing the person to walk (even to or from an ambulance) after having adrenaline
“Anaphylaxis always requires a trip to an emergency department, even if a person appears to have recovered, as they need to be carefully monitored. A common mistake is allowing a person to walk, even to an ambulance or even worse, drive themselves,” said A/Prof Kirsten Perrett, paediatric clinical allergy specialist and Chief Investigator of the Centre for Food & Allergy Research (CFAR). “This is incredibly dangerous because of the impact of anaphylaxis on blood pressure. Walking or standing can take blood away from the heart which could impede resuscitation if required. That is why it is always important to lay a person flat or allow them to sit with their legs outstretched if they are having trouble breathing, but not to walk or stand – this could save their life.”