Here's everything you wanted to know about a deep vein thrombosis, the diagnosis sidelining Bucks guard Damian Lillard indefinitely.

Deep vein thrombosis is an abnormal clot within a vessel where the congealing of blood blocks the flow through on the way back to the heart. It is most common in legs but also can happen in the arms, like Wembanyama’s right shoulder.

According to the Mayo Clinic, deep vein thrombosis is a blood clot that forms in one of the deep veins of the body, usually in the legs. It often causes pain, swelling or warmth in the leg. DVT can also occur without noticeable symptoms.