Let’s Talk About Blood Clots
Anyone can be affected by a blood clot regardless of age, gender, or race. Learn about the signs and symptoms of a blood clot and read stories from blood clot survivors.

This Deep Vein Thrombosis Month, learn about blood clots to help protect your health.
March is Deep Vein Thrombosis Awareness Month. A deep vein thrombosis (DVT) is when a blood clot forms in one of the large veins, usually in the lower leg, thigh, pelvis, or arm. A blood clot can partially or completely block blood flow in the vein. When a DVT is left untreated, a part of the clot can break off and travel to the lungs, causing a blockage known as a pulmonary embolism (PE). In observance of DVT Awareness Month, learn more about blood clots and read stories from blood clot survivors.
In the United States, an estimated 900,000 people are affected by a blood clot every year, yet they are often underdiagnosed. It’s important to raise awareness about blood clots because they are serious medical conditions that can cause illness, disability, and even death. Anyone can be affected, but certain risk factors, such as pregnancy, cancer and its treatment, and hospitalization can increase a person’s risk for a blood clot.
Although, a DVT or PE can occur with no symptoms, knowing the symptoms can help alert you to seek medical treatment as early as possible.
Common signs and symptoms of a DVT include:
- Swelling of the affected area,
- Pain,
- Tenderness, and
- Redness of the skin
If you have these signs or symptoms, alert your doctor as soon as possible.
Common signs and symptoms of a PE include:
- Difficulty breathing,
- Faster than normal or irregular heartbeat,
- Coughing up blood,
- Very low blood pressure, lightheadedness, or fainting
Seek medical attention immediately if you experience any of these signs or symptoms.
For DVT Awareness Month, the Centers for Disease Control and Prevention (CDC) is sharing stories from blood clot survivors. Read their stories to learn about their experience with a blood clot.

Rick’s Story
“I rolled my ankle in January of 2012 playing tennis. I went directly to the emergency room, and they put me in a boot. I wore the boot for 4 weeks, then removed it and began wearing an ankle brace. It was uncomfortable, and swollen, but the swelling seemed to go down each night. After 6 weeks, my ankle and calf were extremely swollen during the day; about 250% the size of my other leg. I showed it to some friends, who have had multiple sprains before, and they immediately told me that it wasn’t right. I called and set an appointment with my doctor for the next day.”
Read Rick’s full story to learn what happened next
What You Can Do
- Learn the signs, symptoms, and risks for blood clots at CDC’s blood clots web page.
- Share resources in the Stop the Clot, Spread the Word® Toolkit to help spread the word about blood clots!
- Read more real stories from other blood clot survivors.
- If you’re a healthcare provider, take Stop the Clot®: What Every Healthcare Professional Should Know, an online course providing the most current information on assessing, treating, and managing patients with blood clots and clotting disorders.