Skip to content
My WebMD Sign In, Sign Up

Deep Vein Thrombosis Health Center

Font Size

Formation of a Blood Clot

h9991583_003.jpg

A blood clot can form when the valves in the veins do not work properly. If the valves do not open normally, blood cells can collect behind the valve and begin to stick together to form a clot. A collection of clotted blood cells is called a thrombus.

The clot, or a piece of it, can break off and travel through the blood vessels. A blood clot can cause serious problems if it gets stuck in a vein and blocks blood flow (thromboembolus).

ByHealthwise Staff
Primary Medical ReviewerAdam Husney, MD - Family Medicine
Specialist Medical ReviewerHoward Schaff, MD - Diagnostic Radiology
Last RevisedJune 28, 2011

WebMD Medical Reference from Healthwise

Last Updated: June 28, 2011
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

Today on WebMD

TAG dvt blood clot
Slideshow
DVT When To Call A Doctor
REFERENCE
 
Are You At Risk For A Deep Blood Clot
QUIZ
Ultrasound For Dangerous Blood Clots
VIDEO
 
Simple Steps to Lower Cholesterol
Slideshow
Having Surgery Tips To Reduce DVT Risk And More
Slideshow
 
New DVT Therapies On The Horizon
Video
Atrial Fibrillation Guide
Slideshow
 

WebMD Special Sections