Believe it or not, about 1 million people in the U.S. are stung by bees. Bee or wasp stings are a common problem, especially in the spring and summer and in warm climates. They're painful, as many of us can attest to, but not a serious issue for the majority of people. Generally, a bee or wasp sting will cause pain, itching, warmth and swelling. People with a severe allergic reaction may have trouble breathing or swallowing and even experience a rash, swelling in the face, lips, throat and tongue. More severe cases bring on weakness, a drop in blood pressure and unconsciousness.