A recent medical checkup of President Donald Trump revealed that mild swelling he had noticed in his lower legs was “chronic venous insufficiency,” a common medical condition among the elderly. CVI, as it’s abbreviated, is due to pooling of blood in the veins.

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

President Donald Trump was diagnosed with a vein condition by the presidential physician according to a July 17 memo.