Doctors discuss how common the condition is, why it happens — and whether Trump's symptoms align with his diagnosis.

Leavitt said Trump noted "mild swelling in his lower legs," which prompted the White House medical team to evaluate him. They concluded that Trump has chronic venous insufficiency -- a condition in which there isn't adequate blood flow in the veins in the legs. This can cause the blood to pool, causing swelling in the lower legs.

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