Deep vein thrombosis
Deep vein thrombosis (DVT) is when your blood gets stuck inside your body instead of moving the way it should. It happens most often in your legs. When you get a cut, your body makes blood clots to stop the bleeding. That's normal and good. But sometimes, your body can't stop making blood clots, and those clots can get really big and block your veins.
When that happens, your blood can't move the way it should, and your leg can get swollen and hurt. It can also make it hard to walk or stand. If the clot gets really big, it can be dangerous and move to your lungs, which is called a pulmonary embolism (PE). That can really hurt and make it hard to breathe, and sometimes people need to go to the hospital to get help.
So, to sum it up: DVT is when a big blood clot gets stuck in your leg and makes it hurt and swollen, and it can be dangerous if it moves to your lungs.
When that happens, your blood can't move the way it should, and your leg can get swollen and hurt. It can also make it hard to walk or stand. If the clot gets really big, it can be dangerous and move to your lungs, which is called a pulmonary embolism (PE). That can really hurt and make it hard to breathe, and sometimes people need to go to the hospital to get help.
So, to sum it up: DVT is when a big blood clot gets stuck in your leg and makes it hurt and swollen, and it can be dangerous if it moves to your lungs.