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Home / Patients / Types of Blood Clots / Deep Vein Thrombosis (DVT)

Deep Vein Thrombosis (DVT)

DVT is when a blood clot forms in a deep vein. The clot halts blood flow in the vein, which can lead to pain and swelling in the area of the clot. These clots usually develop in the lower leg, thigh, or pelvis, but they can also occur in the arm. DVTs are often diagnosed with ultrasounds.

Signs and symptoms of DVT include:

  • Pain, discomfort, heaviness, or tenderness in affected area; sometimes pain is described as aching, throbbing, or cramping
  • Swelling, itchiness, or warmth near the clot
  • Skin changes, such as discoloration or thickening
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The North American Thrombosis Forum (NATF) is a 501(c)3 nonprofit organization incorporated by the Commonwealth of Massachusetts. NATF is dedicated to improving the lives of those affected by blood clots and related diseases. Through our comprehensive resources and innovative programming, we strive to educate patients and healthcare providers about thrombosis and its complications.

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