Is your arm or leg abnormally painful and swollen? Hi, I'm Doctor Savage. I'm an osteopathic family practice physician from Tampa. And I'm here to describe the symptoms of having a blood clot. And most commonly it does happen in the lower extremity in the legs. And classically it happens when someone it sitting for a long period of time, when they're not moving their legs around, inactive, maybe bedridden. And what happens is the blood pools in the veins, albeit either the leg or the arm wherever it may be, a blood clot forms. And with further inactivity the clot actually can enlarge. And then hence blocking the blood flow returning back to the heart, causing your leg to start to pool fluid, and with that excessive fluid, causes tension in the skin and other tissues in the leg. Causing pain. It also tends to become very red and feverish although that doesn't have to happen. Having a blood clot in one of your deep veins is actually a potentially life threatening situation, so if you ever have that, seek medical attention immediately. I hope this is informative. I'm Doctor Savage. I wish you the best of health.