Chronic venous insufficiency, or CVI, happens when veins in the legs can’t properly carry blood back to the heart. That can lead to blood pooling in the lower legs.

Ultrasound confirmed chronic venous insufficiency in Trump’s legs, and hand bruising was attributed to handshakes and daily aspirin

President Donald Trump has been diagnosed with chronic venous insufficiency, the White House announced on Thursday. Here's what to know about the condition.