Key Takeaways
Deep vein thrombosis (DVT) occurs when a blood clot forms in a deep vein, most commonly in the leg, and may cause one-sided swelling, pain, tenderness, warmth, or skin discoloration.
DVT requires prompt medical evaluation because a clot can travel to the lungs and cause a potentially life-threatening pulmonary embolism (PE).
Treatment commonly involves anticoagulant medication (blood thinners) to prevent the clot from growing and reduce the risk of additional clots. Some patients may require additional procedures or interventions.
CLS Health provides expert deep vein thrombosis (DVT) diagnosis and treatment for patients across the Houston area, with convenient clinic locations in Webster and Pasadena, TX. DVT occurs when a blood clot forms in a deep vein—most commonly in the legs—and can lead to swelling, pain, and potentially serious complications if the clot travels to the lungs (pulmonary embolism, or PE).
Although DVT can occur at any age, the risk increases with prolonged immobility, surgery, certain medications, or underlying medical conditions. Prompt diagnosis and appropriate treatment can help prevent serious complications, manage symptoms, and reduce the risk of additional blood clots.
What Is Deep Vein Thrombosis (DVT)?
DVT develops when blood flow slows or a vein becomes damaged, causing a clot to form in a deep vein—often in the calf, thigh, or pelvis. Clots may partially or completely block circulation, leading to pain, warmth, or swelling.
A major concern is that the clot can break loose and travel to the lungs, causing a pulmonary embolism, which requires emergency care.
While more common in older adults, DVT can affect anyone, particularly those who recently had surgery, trauma, or long periods of sitting or bed rest.
Types and Complications of Deep Vein Thrombosis
- Distal DVT: A clot in the deep veins below the knee.
- Proximal DVT: A clot involving deep veins at or above the knee, such as the popliteal, femoral, or iliac veins. These generally carry a greater risk of pulmonary embolism.
- Phlegmasia cerulea dolens: A rare, severe form of extensive DVT that can cause significant swelling, pain, and bluish skin discoloration and requires urgent treatment.
- Post-thrombotic syndrome: A potential long-term complication of DVT caused by damage to the veins and valves, which can lead to persistent swelling, discomfort, heaviness, or skin changes.
Symptoms of DVT
Common Symptoms
- Swelling in one leg, ankle, or foot
- Cramping pain or tenderness (often in the calf)
- Warmth or redness in the affected area
- Aching or heaviness that worsens when standing or walking
If you develop new or unexplained one-sided leg swelling, pain, warmth, or discoloration—especially if you have DVT risk factors—seek prompt medical evaluation.
Pulmonary Embolism Warning Signs — Call 911
- Sudden shortness of breath
- Chest pain, particularly pain that worsens with breathing
- Coughing up blood
- Rapid heartbeat, lightheadedness, or fainting
Call 911 or seek emergency medical care immediately if you experience symptoms that could indicate a pulmonary embolism.
Causes and Risk Factors
DVT develops from a combination of slowed blood flow, vein injury, and increased clotting tendency—known as Virchow’s triad.
Common Causes
- Prolonged sitting, travel, or immobility
- Recent surgery or trauma
- Vein injury or inflammation
- Medical conditions such as cancer or clotting disorders
- Hormonal medications (birth control pills, hormone therapy)
- Genetic clotting tendencies
Major Risk Factors
- Previous DVT or pulmonary embolism
- Active cancer or chemotherapy
- Recent hospitalization or surgery
- Extended immobility
Additional Risk Factors
- Obesity or a sedentary lifestyle
- Smoking
- Pregnancy or postpartum period
- Estrogen-based medications
If you have multiple risk factors, your provider may discuss preventive strategies such as compression therapy or medication.
How Is DVT Diagnosed?
Your healthcare provider will evaluate your symptoms, medical history, and risk factors. Testing may include:
- Duplex ultrasound: The primary imaging test used to evaluate blood flow and detect a blood clot in the deep veins.
- D-dimer blood test: May help rule out DVT in certain patients based on their symptoms and clinical risk.
- Additional imaging: CT, MRI, or venography may occasionally be used when ultrasound results are inconclusive or more detailed evaluation is needed.
Deep Vein Thrombosis Treatment Options
Anticoagulant Medication
Blood thinners (anticoagulants) are the primary treatment for many patients with DVT. These medications help prevent an existing clot from growing and reduce the risk of new clots forming. Your provider will determine the appropriate medication and duration of treatment based on your individual condition and risk factors.
Minimally Invasive & Surgical Options
- Catheter-directed thrombolysis: Places clot-dissolving medication directly into the affected vein
- IVC filter placement: Helps prevent clots from traveling to the lungs when blood thinners cannot be used
- Thrombolytic therapy: Used only in severe cases to rapidly dissolve large clots
DVT Recovery, Home Care & Prevention
DVT requires medical treatment and should not be treated with home remedies alone. After diagnosis, your healthcare provider may recommend steps you can take at home to support recovery and reduce your risk of future blood clots.
- Take anticoagulant medication exactly as prescribed
- Stay physically active as recommended by your provider
- Avoid prolonged periods of sitting or immobility
- Maintain adequate hydration
- Maintain a healthy weight
- Use compression stockings if specifically recommended
- Keep follow-up appointments and monitoring
Need Specialized Care for DVT?
Our vascular specialists can evaluate your condition, review your treatment options, and provide ongoing care for DVT and related vein concerns.
What Type of Doctor Treats DVT?
DVT may be diagnosed and treated by several types of healthcare professionals depending on the severity and complexity of the condition. Vascular specialists may provide evaluation and treatment for DVT, particularly when advanced vascular procedures or management of long-term vein complications are needed. Hematologists may also be involved when an underlying blood-clotting disorder is suspected.
CLS Health's vascular specialists provide DVT evaluation and treatment for patients throughout the Houston area.
Why Choose CLS Health for DVT Treatment?
Patients choose CLS Health for:
- Board-certified vascular specialists
- Evaluation and treatment for DVT and related vein conditions
- Minimally invasive treatment options when appropriate
- Personalized treatment and follow-up care
- Coordinated access to other CLS Health specialties when needed
- Convenient vascular care in Webster and Pasadena
Our vascular team provides personalized care focused on treating blood clots, managing symptoms, and reducing the risk of complications.
DVT Specialists in Houston, Webster & Pasadena
CLS Health provides DVT evaluation and treatment through our vascular specialists in Webster and Pasadena, serving patients throughout the Greater Houston area and surrounding communities.
Schedule your visit today to restore circulation, relieve symptoms, and reduce your long-term risk.
FAQs
DVT requires prompt medical evaluation because a blood clot can grow or travel to the lungs and cause a potentially life-threatening pulmonary embolism (PE). If you experience sudden shortness of breath, chest pain, coughing up blood, fainting, or other symptoms of a possible pulmonary embolism, call 911 or seek emergency medical care immediately.
DVT may be treated by several types of healthcare professionals depending on the severity and complexity of the condition. Vascular specialists may provide evaluation and treatment, particularly when advanced procedures or management of long-term vein complications is needed. A hematologist may also be involved when an underlying blood-clotting disorder is suspected.
Most patients with DVT are treated with anticoagulant medication (blood thinners), which helps prevent the existing clot from growing and reduces the risk of additional clots. Selected patients may require other treatments, such as catheter-directed thrombolysis or an IVC filter. Treatment depends on the location and severity of the clot, bleeding risk, medical history, and other individual factors.
Recovery from DVT varies depending on the size and location of the clot, your overall health, and whether complications develop. Symptoms such as pain and swelling may gradually improve over weeks or months, while anticoagulant treatment commonly continues for several months or longer. Your provider will determine the appropriate treatment duration and follow-up plan.
DVT requires medical evaluation and treatment and should not be treated with home remedies alone. Once DVT has been diagnosed and treatment has started, some patients can continue their recovery at home. Your provider may recommend taking medication as prescribed, staying active as directed, avoiding prolonged immobility, and attending follow-up appointments.
Yes. Having a previous DVT increases the risk of developing another blood clot. Your individual risk depends on factors such as what caused the original DVT, underlying medical conditions, and whether persistent risk factors are present. Following your treatment plan and discussing prevention strategies with your provider can help reduce the risk of recurrence.