Aggressive bees can be dangerous sometimes! A bee sting causes pain, redness, itching as well as swelling. The allergic reactions of bee stings are uncommon but if a person has reactive skin the reaction may be serious. If a swarm of bees attack a person and give multiple stings the consequences could be serious which needs immediate medical attention. The consequences may scale up to difficulty in breathing or swallowing. The stinging apparatus of the bees contain a sac of venom and when the bee stings, the venom get pumped into the tissues causing pain, swelling, redness, and itching (For More Details Click Here).