Deep vein thrombosis, or DVT, is a serious condition in which a blood clot forms in one of the deep veins of the body — most often in the lower leg, thigh, or pelvis. Left untreated, a clot can break loose and travel to the lungs, causing a life-threatening pulmonary embolism. At Fox Vein & Vascular in Manhattan, board-certified vascular specialist Dr. David Fox provides expert diagnosis and treatment of DVT, helping patients across New York City protect their circulation and their lives.
This page explains what DVT is, how to recognize it, who is most at risk, and the treatment options available. If you are experiencing symptoms of a clot right now, treat it as a medical emergency and seek care immediately.
What Is Deep Vein Thrombosis?
Your circulatory system relies on veins to return blood from your limbs back to your heart. Deep veins, located within the muscles rather than near the surface of the skin, carry the majority of this blood. When blood flow slows or the vein wall is injured, blood can thicken and clot. A clot lodged in a deep vein is called a deep vein thrombosis.
DVT is distinct from the visible varicose and spider veins many people associate with vein disease. It is also different from peripheral arterial disease (PAD), which affects the arteries rather than the veins. Understanding the difference matters, because the treatment for a venous clot is very different from the treatment for a blocked artery.
Symptoms of DVT
DVT can develop with few or no warning signs, which is part of what makes it dangerous. When symptoms do appear, they usually affect one leg and may include:
- Swelling in one leg, ankle, or foot
- Aching, throbbing, or cramping pain, often in the calf
- Skin that feels warm to the touch over the affected area
- Red or discolored skin
- A heavy or tight sensation in the leg
Because these symptoms overlap with everyday muscle strains, many people dismiss them. For a fuller breakdown of what to watch for, see our guide to DVT warning signs every New Yorker should know.
Seek emergency care immediately if you experience sudden shortness of breath, chest pain that worsens with deep breaths, a rapid heartbeat, or coughing up blood. These can be signs of a pulmonary embolism — a clot that has traveled to the lungs.
What Causes DVT?
DVT develops when something disrupts normal blood flow or the blood’s natural tendency to clot. The classic contributing factors, often called Virchow’s triad, are slowed blood flow, injury to the vein wall, and increased clotting tendency. Common real-world triggers include prolonged immobility, recent surgery, injury, certain medical conditions, and inherited clotting disorders.
Many patients are surprised to learn that everyday circumstances — a long flight, a hospital stay, or weeks of reduced activity after an injury — can set the stage for a clot. We explore the full picture in our overview of DVT risk factors.
Who Is at Risk?
While DVT can affect anyone, certain factors raise the risk significantly:
- Prolonged sitting, such as on long flights or car rides
- Extended bed rest or recent hospitalization
- Recent surgery, especially orthopedic procedures
- Pregnancy and the weeks following delivery
- Use of estrogen-based birth control or hormone therapy
- Obesity and a sedentary lifestyle
- Smoking
- Cancer and certain cancer treatments
- A personal or family history of blood clots
- Age over 60
Having one or more of these factors does not guarantee a clot will form, but it does mean prevention and awareness are especially important.
Questions about your treatment options? Dr. Fox can help.
Book a ConsultationHow DVT Is Diagnosed
Prompt, accurate diagnosis is critical. At Fox Vein & Vascular, Dr. Fox begins with a thorough evaluation of your symptoms, history, and risk factors. The most common diagnostic tool is a duplex ultrasound, a painless, non-invasive scan that uses sound waves to visualize blood flow and detect clots in the deep veins. In select cases, additional blood tests or imaging may be ordered to confirm the diagnosis and assess severity.
DVT Treatment Options
The goals of DVT treatment are to stop the clot from growing, prevent it from breaking loose and traveling to the lungs, and reduce the risk of future clots. Treatment is tailored to each patient and may include:
Anticoagulant Medication
Blood thinners are the cornerstone of DVT treatment. They do not dissolve an existing clot, but they prevent it from enlarging and allow the body to break it down naturally over time while reducing the chance of new clots.
Compression Therapy
Medical-grade compression stockings improve blood flow in the legs, reduce swelling, and help prevent post-thrombotic syndrome, a long-term complication that can cause chronic leg pain and swelling.
Minimally Invasive Procedures
For larger or more dangerous clots, advanced options such as catheter-directed thrombolysis (delivering clot-dissolving medication directly to the clot) or the placement of an inferior vena cava (IVC) filter may be appropriate. Dr. Fox will discuss whether these interventions are right for your situation.
Why Choose Fox Vein & Vascular for DVT Care
Dr. David Fox is a double board-certified vascular surgeon with extensive experience treating the full spectrum of venous and vascular conditions. Patients throughout Manhattan and the greater New York City area trust Fox Vein & Vascular for accurate diagnosis, personalized treatment plans, and compassionate follow-up care. When it comes to a condition as time-sensitive as DVT, that expertise can make all the difference.
Don’t Wait on a Blood Clot
DVT is highly treatable when caught early — but the window matters. If you are noticing swelling, pain, or warmth in one leg, or you have risk factors and want to be proactive, an expert evaluation is the safest next step.
Concerned about a blood clot or unexplained leg pain or swelling? Don’t wait. Schedule a consultation with Dr. David Fox at Fox Vein & Vascular for an expert vascular evaluation. Call (212) 362-3470 or visit foxvein.com to book your appointment.