Swelling and pain in one of your legs, skin that looks red or discolored, and feels warm-- these symptoms can be caused by a blood clot in a vein deep inside your body, usually in one of your legs.

High blood pressure, stress, sun exposure, vein dysfunction, pregnancy, and other factors can contribute to the appearance of veins on the forehead. Genetic factors or age can influence whether ...

when a blood clot forms in a vein, usually deep inside your leg. Your veins don't just rely on your heartbeat to force blood through them. They also use the movement of nearby muscles to move it ...