Rinse your eye thoroughly in case there's any dirt or hair stuck under the lid. If this doesn't help, the most common cause is a stye or eyelid infection. Applying a warm cloth or teabag to the eyelid can help reduce the swelling.
Swelling may be caused by injury, infection,unknown causes. drooping may be caused by injury or unknown abnormality. either problem should be evaluated by an opthalmoligist (md)
