Blood clotting is a natural and vital part of the body’s healing process. When you sustain an injury, blood clots form to stem bleeding, allowing the wound to heal. However, when clots form within the veins without a corresponding injury, this can signal a serious health issue. To safeguard your health, it’s crucial to recognize the early signs of such internal blood clots. Early detection allows for prompt treatment, helping to prevent the clot from developing into a life-threatening condition.

What is a Blood Clot?

Blood clots form when platelets and proteins in the plasma (the liquid part of the blood) bind together to create a clot over an injury site, preventing excessive bleeding. This vital process protects against dangerous blood loss that could lead to death ¹.

Typically, your body naturally dissolves the blood clot once the injury heals. However, sometimes, clots form inside vessels without any injury or fail to dissolve on their own. Such clotting can be perilous ¹.

Types of Blood Clots and Their Health Implications

Blood clots can occur in both arteries and veins, each type carrying specific health implications:

• Arteries: When a blood clot forms in an artery, it’s known as an arterial clot. These are often linked to atherosclerosis, a condition characterized by hardened arteries due to plaque buildup. If arterial muscles continue to push blood through this narrow opening, the high pressure can cause the plaque to rupture. The body may then overreact and form an unnecessary clot in the artery. This can lead to a heart attack or stroke, causing significant damage to the brain or heart ¹.
• Veins: Venous clots can restrict the return of blood flow to the heart, causing pain and swelling. They tend to develop more slowly but can still pose serious risks. Deep vein thrombosis (DVT) is the most severe form of venous blood clot. DVT occurs when a blood clot forms in a major vein of the leg, arms, pelvis, or other large veins in the body. In some cases, a clot might detach and travel through the heart to the lungs, becoming wedged and causing a pulmonary embolism (PE), which prevents adequate blood flow and can be life-threatening ¹.

According to the CDC, DVT combined with PE affects up to 900,000 Americans annually, with roughly 100,000 of these cases proving fatal ². Recognizing the signs of a blood clot can help you seek medical attention early, allowing for timely treatment before the condition worsens.

Six Key Warning Signs of Blood Clots

Here are six common symptoms of blood clots that could potentially save your life:

1. Sudden Swelling: Blood clots commonly form in the lower leg. If you notice one ankle or shin suddenly swelling, this could be a sign of a clot. The swelling occurs when blood flow in one leg is blocked, causing blood to pool behind the clot. Additional symptoms include pain, tenderness, warmth, and a reddish discoloration at the site ².
2. A Racing Heart: A rapid heartbeat could indicate a blood clot in your lungs. Due to restricted blood flow to the lungs, your heart might speed up to compensate ³.
3. Chest Pain: Sharp chest pain, especially when breathing deeply, could be a sign of a pulmonary embolism. If you’re unable to take a deep breath due to this pain, it could likely be a result of a blood clot. This pain might also be felt when you cough, bend, or stoop ³.
4. Unexplained Cough: A sudden dry cough without an apparent reason could suggest a blood clot. If your cough produces bloody or blood-streaked sputum, you should seek medical attention immediately ³.
5. Vomiting: Severe, sudden abdominal pain accompanied by nausea and vomiting could indicate mesenteric ischemia or a blood clot in the abdomen. Additional symptoms could include a fever or urgent need for a bowel movement ⁴.
6. Impaired Vision: If your vision in one eye suddenly becomes blurry or goes completely, it might be a sign of central retinal artery occlusion (CRAO), a clot in a vessel carrying blood to the eye’s retina. Symptoms of CRAO may include:
   • Sudden blindness in one eye
   • Complete blurring of vision in one eye
   • Gradual loss of vision over a few weeks in one eye ⁵

Treating Blood Clots

Treatment for a blood clot varies based on where it’s formed. In the case of a pulmonary embolism, immediate medical attention is crucial. Doctors may administer thrombolytics, medicines that dissolve the clot, followed by anticoagulants to prevent new clots from forming.

For deep-vein thrombosis, doctors might recommend compression stockings to alleviate pain and swelling. In more severe cases, surgery may be required to remove the clot ².

Prevention is Better Than Cure: How to Avoid Blood Clots

Although knowing the signs of a blood clot is essential, preventing them is even more crucial. Thankfully, blood clots are among the most preventable blood disorders. Here are some risk factors to manage in order to reduce your likelihood of developing a blood clot:

• Obesity
• Pregnancy
• Immobility (including prolonged inactivity, long trips by plane or car)
• Smoking
• Oral contraceptives
• Certain cancers
• Trauma
• Certain surgeries
• Age (increased risk for people over age 60)
• A family history of blood clots
• Chronic inflammatory diseases
• Diabetes
• High blood pressure
• High cholesterol ¹

Although not all of these factors are modifiable, managing as many of them as possible can significantly lower your risk of developing a blood clot.

Conclusion: Knowledge Can Save Lives

Regardless of preventative measures, health problems can sometimes occur. However, knowing the signs of a blood clot can make a significant difference, potentially saving your life. Always remember, you know your body best. If something seems off, consult with your doctor right away.