Recognising an insect venom allergy
By Wespenprofis.ch · Reviewed by:Fachbewilligung Schädlingsbekämpfung VFB-S · Updated: 3 July 2026
At a glance
A normal sting reaction stays confined to the site of the sting. With an insect venom allergy, by contrast, symptoms appear away from the sting site — for example hives across the whole body, breathing difficulties, dizziness or circulatory problems. A doctor makes the diagnosis using skin and blood tests; if it is confirmed, immunotherapy is an option.
This article is not a substitute for medical advice. If you experience difficulty breathing or swelling around the throat, call 144 immediately.
Not every strong reaction to a wasp or bee sting is an allergy. This article shows which signs point to a genuine insect venom allergy and how it is diagnosed. It is no substitute for medical advice.
Normal reaction or allergy?
Insect venom — for example bee venom with the active substances melittin, apamin and phospholipase A2 — contains proteins that the body reacts to. In most people this reaction stays limited to the site of the sting: redness, swelling, itching. With a genuine insect venom allergy, by contrast, the immune system overreacts and does so generally — that is, across the whole body and not only at the sting site.
Warning signs of an allergy
Watch out for symptoms that appear within a few minutes of the sting away from the site of the sting:
- Hives or a rash across the whole body
- Swelling of the face, the lips or the throat
- Breathing difficulties or wheezing
- Dizziness, nausea or circulatory problems
If such symptoms occur, this is a medical emergency. Call the emergency number 144 immediately. More on what to do in the article «Anaphylactic shock: first aid».
How the diagnosis works
Anyone who suspects an insect venom allergy should have it investigated by a doctor or an allergy specialist. This usually involves taking a detailed medical history, a skin prick test and a blood test for specific IgE antibodies against wasp and bee venom. This makes it possible to establish whether a sensitisation is in fact present, and to which venom.
What follows the diagnosis
Where an allergy is confirmed, an emergency kit is often prescribed, which depending on the prescription may contain an adrenaline auto-injector. It is important that those affected and the people around them know where the kit is kept and how it is used in an emergency. In addition, venom immunotherapy is an option, which can significantly reduce the risk of severe reactions in future; more on this in the guide «Venom immunotherapy for wasp venom allergy». Basic immediate measures after a sting can be found in the pillar guide «Wasp sting — what to do?».
Frequently asked questions
How do I recognise a genuine insect venom allergy?
Typical signs are symptoms that go beyond the site of the sting, such as hives across the whole body, breathing difficulties, swelling of the face, dizziness or circulatory collapse. These signs usually appear within minutes of the sting.
How is an insect venom allergy diagnosed?
After taking a detailed medical history, a doctor will normally carry out a skin prick test and a blood test for specific IgE antibodies against wasp and bee venom.
Do I always have to carry an emergency kit once an allergy has been diagnosed?
Where an insect venom allergy is confirmed, the doctor will often prescribe an emergency kit, including an adrenaline auto-injector. The exact contents and how it is used are decided on an individual basis.