What is superficial thrombophlebitis?
Superficial thrombophlebitis (ST, or SVT) is a condition in
which inflammation causes a blood clot to form in a vein
near the surface of the body. Often it develops in varicose
veins, usually in the leg, pelvis, or arm. Varicose veins
are enlarged veins close to the surface.
How does it occur?
ST occurs when a clot forms in a vein because blood flow in
the vein slows down or stops. ST can occur after minor
injury to a vein, for example, after a bruise or after you
have had an IV (medicine or fluid given through a vein). It
can also occur after intense exercise.
What are the symptoms?
Symptoms of superficial thrombophlebitis may include:
- tender cordlike vein that is very sensitive to pressure
- redness and warmth in the area around the vein
- swelling in the area around the vein.
How is it diagnosed?
Your health care provider will ask about your symptoms and
examine you. He or she will be able to determine if you
have ST from the physical exam. In some cases you may have
special ultrasound or x-ray studies to check for clots in
deeper veins.
How is it treated?
For treatment, your health care provider may recommend that
you:
- Take an anti-inflammatory drug, such as aspirin or
ibuprofen.
- Rest and elevate your arm or leg while you have pain and
swelling, typically for 1 week.
- Put warm, moist compresses on the inflamed area (be
careful to avoid burns).
- Elevate the affected arm or leg above the level of your
heart when you are lying down.
How long will the effects last?
With proper treatment, ST usually lasts 1 to 2 weeks.
How can I take care of myself?
- Follow your health care provider's instructions.
- Ask if you may do exercises in bed and how soon you may
start taking daily walks.
- If you have varicose veins, ask your health care provider
if you should wear special support stockings.
How can I help prevent ST?
Because ST usually results from injury, it is hard to
prevent.


Disclaimer: This content is reviewed periodically and is subject to
change as new health information becomes available. The
information provided is intended to be informative and educational and is not a
replacement for professional medical evaluation, advice, diagnosis or
treatment by a healthcare professional.
HIA File CRD3648F.HTM Release 9.0/2006. Copyright © 2006 McKesson Corporation and/or one of its subdiaries. All Rights Reserved.
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