Different causes: There are several things that can cause swelling in one lower leg from lymph edema to a blood clot. It is important to make sure you do not have something serious like a blood clot because if you do it can travel to your heart or lungs and cause death or to your brain and cause a stroke. Therefore, you need to seek medical attention and have the swelling checked out to rule out something serious.
Answered 11/16/2013
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