The answer depends on how your body reacts to the venom. The length of swelling varies from person to person. It may last from a few hours to a couple of days. There are several effective methods you can use to reduce the swelling, such as applying ice to the sting. If you experience severe swelling that you suspect is caused by an allergic reaction, call 9-1-1 or go to the emergency room.
Swelling from a bee sting lasts from a few hours up to a week depending on the reaction of the body or the treatment given. Over-the-counter NSAIDs such as ibuprofen and Advil can help relieve swelling and pain from a bee sting. If the swelling occurs within the neck and mouth, immediate treatment in the hospital is recommended.