According to the Centers for Disease Control and Prevention (CDC), perhaps 900,000 people will struggle with deep vein thrombosis (DVT) in a given year. Unfortunately, the CDC also estimates that perhaps 100,000 of these people may die from complications related to DVT.

Considering up to 1 in 9 people may die from this condition, that makes being able to spot this condition right away a crucial first step in getting professional treatment.

So, let’s start with the basics: what exactly is deep vein thrombosis, anyway?

What is DVT?

Deep vein thrombosis, also known as DVT, is a condition where a blood clot forms in one of the body’s deeper veins. Thrombosis is the medical term that refers to a blood clot (thrombus) forming.

Where does it occur?

DVT most commonly occurs in either the thighs or lower body. However, it can occur in other areas of the body, too.

What are the complications of DVT?

Blood clots should always be taken seriously. With DVT, blood clots may break, allowing them to travel all the way up to the lungs. Once there, they may become stuck and prevent blood flow. This potentially fatal complication is known as pulmonary embolism.

What are the symptoms of DVT?

DVT can cause several symptoms; some people may not show symptoms at all, making spotting this condition occasionally difficult. When symptoms appear, though, it’s time to get medical attention right away to reduce the risk of serious medical complications like pulmonary embolism.

The first potential sign of DVT? It’s a real pain—literally…