Relationshipbetween deep venous thrombosis and the postthrombotic syndrome. Randomisedtrial of effect of compression stockings in patients with symptomaticproximal-vein thrombosis. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical associations. No blood is able to flow through it at all. In incredibly severe cases, the vein can be so badly damaged that it becomes completely blocked off. A minor abrasion can then become a larger sore that doesn’t heal. It later becomes brown in colour, hard, and leathery to touch. It becomes dry around the ankles, discoloured, and itchy. Scarred veins do not expand as normal veins do, so when the flow of blood increases and they cannot expand, it causes a throbbing pain and swelling in the lower part of our legs.Įventually, this can cause damage to the skin on the leg. When we do certain physical activities, like walking, the flow of blood through our veins increases. The walls of the vein can also become damaged and scarred after a DVT. It causes pressure to build up in the veins in the lower part of our legs, which leads to swelling and discomfort. When valves are damaged, blood can flow the wrong way. They are incredibly fragile and can become damaged easily. Vein valves are necessary to ensure that the blood flows in an upward direction toward the heart. Prompt diagnosis and treatment of a DVT is necessary to prevent this damage from occurring, as once the valves and walls of the vein are damaged, they cannot be repaired. The primary cause of PTS is when the valves and walls of the veins become damaged as a result of a DVT.
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