For some people, a bee sting is a medical emergency. If a person is having an allergic reaction to a bee sting, call 911. If they have an epinephrine auto-injector (like an EpiPen), help them find and use it. Encourage them to remain calm until help arrives.
Someone who’s stung by a bee and showing no signs of an allergic reaction can usually be treated without professional help.
If the stinger is still stuck under the skin, gently scrape a credit card or other flat object across their skin to remove it. Then wash the area with soap and water and apply a cool compress for up to 10 minutes at a time to reduce pain and swelling.
To treat itching or pain from the sting, consider applying calamine lotion or a paste of baking soda and water to the area several times a day.