Signs and Symptoms of a Blood Clot

The signs and symptoms of a blood clot include swelling, skin tenderness and warmth, and even chest pain, shortness of breath, and dizziness. 

Blood clot symptoms vary depending on the size and whether it's in a vein or an artery. The severity of blood clot symptoms also depends on what's causing them.

This article will go over the common signs and symptoms of a blood clot and what to do if you're experiencing them.

Common Blood Clot Symptoms

It is possible to have no symptoms with a blood clot—for example, if you have a clot in your kidney. However, blood clots in major veins or arteries will usually cause symptoms that are serious and require emergency medical care.

Symptoms of a blood clot related to deep vein thrombosis (DVT) include:

• Warmth in the area where the clot is located
• Swelling (for example, one leg is larger than the other)
• Tenderness when you touch the area around the clot
• Mild to moderate pain that increases over hours or days

Symptoms of a blood clot that may suggest a heart attack may involve:

• Chest pain or discomfort: Most heart attacks cause discomfort in the center or left side of the chest. The discomfort usually lasts for more than a few minutes or goes away and comes back. It can feel like pressure, squeezing, fullness, or pain. It also can feel like heartburn or indigestion.
• Upper body discomfort: You may feel pain or discomfort in one or both arms, your back, shoulders, neck, jaw, or the upper part of your stomach.
• Shortness of breath: This can be your only symptom or it may come on before or along with chest pain or discomfort. It can also come on when you are resting or doing a little physical activity.
• Breaking out in a cold sweat
• Feeling unusually tired for no reason—sometimes for days (especially in females)
• Nausea and vomiting
• Lightheadedness or sudden dizziness

Symptoms of a blood clot that may suggest a stroke include:

• Sudden weakness or numbness in the face, arm, or leg on one side of the body
• Sudden loss, blurring, or dimming of vision
• Slurred speech or inability to speak
• Sudden, severe headache
• Dizziness, drowsiness, falling, or lack of coordination
• Nausea or vomiting (especially if accompanied by any of the above symptoms)

Blood Clot Complications

Blood clots can, but do not always, cause complications. However, know that you may not have any of the common symptoms of a clot before these complications happen.

• Pulmonary embolism (PE): Sometimes a clot in the lower limbs or pelvis due to DVT breaks loose and travels to the lungs and blocks the flow of blood. The symptoms can include sudden, severe shortness of breath, rapid breathing, chest pain, profuse sweating, loss of consciousness, bluish color to the lips and fingertips, and a cough that may produce bloody sputum (mucus).
• Pulmonary hypertension: It is possible to have several blood clots that block smaller pulmonary arteries but do not cause symptoms. This can lead to high blood pressure in the pulmonary arteries, which, in turn, puts extra stress on the heart, potentially resulting in heart failure. 

When to See a Healthcare Provider

A blood clot and its complications can be life-threatening. If you have signs or symptoms of a blood clot and feel like you could be having a heart attack, stroke, or pulmonary embolism, call 911 or go to the emergency room.

Blood Clots Doctor Discussion Guide

Get our printable guide for your next doctor's appointment to help you ask the right questions.

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Summary

The signs and symptoms of a blood clot depend on where it is, how big it is, and what is causing it. If you think you could have a blood clot, don't wait to get medical care. The sooner it is diagnosed and treated, the lower your risk of possibly life-threatening complications.