Here’s what to know about chronic venous insufficiency Risk factors can include blood clots, vein inflammation known as phlebitis or being overweight.

What is chronic venous insufficiency and what causes it? It’s a form of venous disease that can occur when the veins in your legs become damaged or weakened.

President Donald Trump has been diagnosed with chronic venous insufficiency, the White House announced Thursday. Here's a closer look at the condition and Trump's diagnosis.