Thrombosis is the formation of a blood clot inside a blood vessel, which can obstruct the normal flow of blood. This can occur in veins or arteries and is usually caused by an imbalance in the blood clotting system.
Clots can cause symptoms such as swelling, pain, or redness in the affected area.
In severe cases, thrombosis can completely block blood flow and cause organ damage. Treatment may include anticoagulant medications or procedures to dissolve or remove the clot.