“Normally, the valves in your veins make sure that blood flows toward your heart. But when these valves don’t work well, blood can also flow backwards. This can cause blood to collect (pool) in your legs,” it explained.

If untreated, sufferers may endure swelling, pain, muscle cramps, skin discoloration, varicose veins, and even leg ulcers.

While common in those over 70, the condition can also affect people who are pregnant, overweight, or have a family history of vein problems. Prior injuries, surgeries, or blood clots may also increase the risk.

Other potential triggers include prolonged periods of standing or sitting, smoking, a sedentary lifestyle, high blood pressure in the leg veins, or vein inflammation near the skin’s surface.

Symptoms range from swollen legs and ankles to a tight feeling in the calves, itchiness, varicose veins, and even painful cramps or restless leg syndrome.

Leavitt confirmed that thorough testing by the White House medical unit showed “no evidence of deep vein thrombosis or arterial disease,” and that blood clots had been ruled out.

Doctors typically treat the condition with compression hose and encourage regular exercise to improve circulation. In more advanced cases, medication or medical procedures may be necessary.