First aid for a wasp sting
Most wasp stings are painful but not dangerous, whether from a paper wasp or a yellowjacket/" style="color: var(--pine-700, #1E5B3E); font-weight: 600; text-decoration: underline;">yellowjacket. You can usually care for them at home. Start by calmly moving away from the area. Wasps can sting more than once, and a disturbed nest may send out others. Then treat the sting:
- Wash the site with soap and water
- Apply a cold pack wrapped in cloth to reduce pain and swelling
- Take an over-the-counter pain reliever or antihistamine if needed
- Keep the area clean and try not to scratch it
What are the signs of a serious allergic reaction?
A small number of people are allergic to wasp venom. That reaction (anaphylaxis) can be life-threatening, and it can come on within minutes. Call 911 right away if you notice any of these after a sting:
- Trouble breathing, wheezing, or tightness in the throat or chest
- Swelling of the face, lips, tongue, or throat
- Dizziness, fainting, or a rapid, weak pulse
- Hives or itching spreading well beyond the sting site
- Nausea, vomiting, or stomach cramps
How long do the pain and swelling normally last?
For most people, the sharp pain of a wasp sting eases within a few hours. Some redness, swelling, and itching at the site may linger for a day or two before fading. A few people develop what is called a large local reaction. In this case, swelling spreads over a wider area of the limb and can last several days. It looks alarming. On its own, though, it is not the same as a dangerous whole-body allergic reaction. If swelling keeps expanding after a couple of days, or shows signs of infection, have it checked.
When else should I see a doctor?
Beyond an allergic emergency, some situations still call for medical attention. These include stings inside the mouth or throat, which can swell and affect breathing. They also include many stings at once, or a sting near the eye. So do signs of infection, such as increasing redness, warmth, and pus developing over the following days. For non-emergency questions about symptoms or medications, you can call Poison Control at 1-800-222-1222.
How is a wasp sting different from a bee sting?
The practical difference is the stinger. A honeybee's barbed stinger usually stays in the skin, so removing it quickly limits venom, and the bee can sting only once. Wasps have a smooth stinger. So they can sting repeatedly and generally do not leave it behind. Wasp stings are also more often linked to defensive nest attacks. That is why disturbing a nest can trigger multiple stings.
How can I prevent wasp stings?
A few habits reduce your chances of being stung:
- Stay calm and move away slowly rather than swatting, which provokes wasps
- Keep food, sugary drinks, and trash covered when eating outdoors
- Avoid wearing strong fragrances and bright floral patterns in wasp-heavy areas
- Check for nests before yard work near eaves, sheds, and dense shrubs
