Phlebitis is an inflammation of a vein. Thrombosis is the formation of a thrombus or blood clot that may partially or completely block a blood vessel. A clot located in an inflamed, superficial blood vessel is called a thrombophlebitis. A clot formation in a deeper vein is called a deep vein thrombosis. Blood clots may follow injury, surgery, childbirth, or prolonged bed rest. They may also be associated with infection.

Symptoms of phlebitis may include:
* a hard and cord-like vein that is very sensitive to pressure,
* a surrounding area that is red and warm to the touch,
* a limb that is cold or swollen, or
* a slight fever.

The primary danger in thrombophlebitis, is that the clot may move and travel to a vital organ, causing serious damage. For example, a pulmonary embolism occurs if the clot travels to the lung.

If you have symptoms of thrombophlebitis or deep vein thrombosis your doctor may order a Doppler ultrasound examination, a test that uses sound waves to locate clots. A venogram is a test in which dye is injected into a vein, usually in the foot. X-rays are taken to visualize the circulation and any blockages that may be present. Lung scans may be ordered if there is concern that blood clots have traveled to the lungs.

Phlebitis is treated with anticoagulant drugs, such as heparin or coumadin. These drugs inhibit the formation of blood clots. They reduce the risk of the clots traveling and obstructing blood flow to vital organs.

Healthy lifestyle habits can help prevent phlebitis and thrombosis. These include:
* Stop smoking.
* Exercise regularly.
* Maintain your ideal body weight.
* Avoid wearing garters, knee-high stockings, and tight pantyhose.
* Avoid crossing your legs or ankles when you sit.
* Be sure the birth control pills you take are safe for you.

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