Some blood clots form in blood vessels just beneath the skin’s surface, causing inflammation that a person can see and feel. However, the most serious clots occur in veins deep inside the body, ...

The retromandibular vein is a branch of the jugular veins. The jugular veins go up the neck and join with the facial vein, which drain blood from the face and return it to the heart for oxygenation.

People who experience leg weight, swelling and pain after extended periods of sitting might be suffering from deep vein issues, because these symptoms often appear after long flights, road trips and ...