Pathology: Blood or qi deficiency. This is seen in cases of deficiencies and failure of Qi and blood. It can also be seen in disharmonies of the even emotions, weakness in Yang Qi, internal damage to jing, and penetration of dampness.
Testing for venous blood clots. Venous blood clots may be detected in a variety of ways, though ultrasound is most commonly used. Occasionally, the patient's size and shape limit the ability for ultrasound to provide a definitive answer. Venography is an alternative test to look for a clot.
Physicians treat blood clots with a variety of methods. These include medications such as anticoagulants (drugs to help prevent blood clots) or clot busters (drugs that help dissolve blood clots that have formed). In more serious situations, surgeons may opt for a catheter-based procedure or surgery to remove the clot.