<human>:  How do I treat a wasp sting?
<bot>: The most important thing is to act fast. Immediately remove the stinger as soon as possible. Wash the affected area with warm, soapy water and apply a cold compress to reduce swelling. An anti-itch cream can also be applied if necessary. In some cases, an over-the-counter antihistamine may be needed to reduce itching and swelling. If the area is still in pain and swelling after a few days, seek medical attention.