Superficial thrombophlebitis
Risk of DVT
There's a small chance of the blood clot travelling along the vein to where it meets a deeper vein, and a DVT developing.
This is more likely if the surface clot extends into the upper thigh or groin, or behind the knee (in places where superficial veins meet deeper veins).
It is also more likely to occur if the affected vein is a normal vein, ratherthan a varicose vein, if you have had a DVT before, or if you are immobile.
A DVT can cause pain, swelling and a heavy ache in your leg see your GP immediately if you experience these symptoms.
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Medically Reviewed by a doctor on 21 Dec 2018
Introduction
NHS Choices information on phlebitis and superficial thrombophlebitis, with links to other useful resources.
What are the symptoms?
Superficial thrombophlebitis results in painful, hard lumps underneath the skin and redness of the overlying skin. This is usually on the lower leg, although it can occasionally affect surface veins
Is it serious?
Superficial thrombophlebitis is typically more annoying than serious. Usually, the blood clot clears and the inflammation dies down within a few weeks. Most people with superficial thrombophlebitis
Who is most at risk?
You're more at risk of superficial thrombophlebitis if you: have varicose veins smoke are very overweight take the contraceptive Pill or Hormone replacement therapy (HRT) (although
How isit treated?
Phlebitis is inflammation, not infection, so antibiotics aren't helpful. You can follow this advice to help reduce any pain and swelling: raise the leg to help reduce swelling wear compression
What's the outlook?
When the inflammation settles, you may be left with darkened skin and the lump may take three or four months to go. But most people make a full recovery. If the thrombophlebitisoccurred in a varicose
Risk of DVT
There's a small chance of the blood clot travelling along the vein to where it meets a deeper vein, and a DVT developing. This is more likely if the surface clot extends into the upper thigh or groin
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