ER or Not: Leg Swollen After a Long Car Drive

After sitting for a long time you notice one leg is swollen and your calf is painful. Should you go to the ER? Emergency room physician Jeffrey Druck, MD, says the risk of a blood clot in your leg from sitting too long is reason to visit the ER. Find out why sitting for a long time during a car drive or plane flight can be dangerous, who can be at risk, and what you can do to prevent it.