Deep vein thrombosis is the presence of a blood clot in a deep vein, especially on the pelvis or legs. This condition can be life-threatening if the clot detaches and travels to the heart, consequently blocking the arteries that supply to the lungs. Older age, recent surgery, active cancer, traumatic injuries, pregnancy, and certain genetic factors can play a role wherein the body can develop this condition.

Symptoms of deep vein thrombosis
Swelling in the leg, ankle, and/or foot. This usually occurs on one leg only, but there are chances of it occurring in both legs.

Cramps and pain associated with it on the leg that is affected. It usually begins in the calf and extends to higher and lower areas.

Tenderness in the foot, ankle, or leg. This can occur in the arm as well.

Unexpected pain in the foot or ankle is extremely severe. Sometimes, this occurs only when one walks or stands.

The skin on the leg suddenly becomes warm to the touch.

Visible veins that are inflamed, red, or swollen. These veins can be seen and are tender to the touch.

The skin above the clot may sometimes change in color. It tends to turn pale or a reddish color. It may also appear blue in color in some cases.

Sudden onset of cough that bring up blood

Sharp chest pain and tightness

Quickened heartbeat

Difficulty in breathing and pain while breathing

Lightheadedness.

People who have deep vein thrombosis in their arm can experience a different set of symptoms. Sometimes, symptoms may also not show up.

If they do, the symptoms are as follows

• Neck pain
• Swelling in the arm, wrist, or palm
• Shoulder pain

A person’s skin may change color and have a slight blue tint to it. The pain gradually spreads from the arm to the forearm. One’s hand may feel weak.

Some people don’t realize they have this condition until they’ve been diagnosed with pulmonary embolism, which is a complication of deep vein thrombosis. The clot from the limb breaks off and reaches the lung, causing life-threatening problems there.

Causes of deep vein thrombosis
This condition is caused by a blood clot that blocks a vein in a limb. These clots could occur due to a variety of reasons.

Injury can sometimes cause destruction to the walls of some blood vessels. This can result in a narrowed blood vessel (which reduces the flow of blood) or a blocked blood vessel (which completely stems the flow of blood). A blood clot can form in that area as a result.

Surgery can cause damage to the blood vessels, which can in turn result in the formation of a blood clot. The chances of this happening are more if there is nil movement after a surgical procedure.

Reduced mobility can cause blood to collect in the veins of the legs or arms and cause a clot to develop.

Certain medications can create a blood clot, leading to deep vein thrombosis.