What symptom typically indicates chronic venous insufficiency?

Chronic venous insufficiency is primarily characterized by symptoms that stem from the improper functioning of the venous system in the legs. One of the hallmark symptoms of this condition is swelling in the lower extremities, particularly after prolonged periods of standing or sitting. This occurs because the veins are unable to efficiently return blood to the heart, causing blood to pool in the legs and leading to increased hydrostatic pressure.

As blood accumulates in the veins, the excess fluid can leak into surrounding tissues, resulting in edema. Over time, chronic venous insufficiency may also lead to other complications such as skin changes, varicose veins, and even ulcerations. Therefore, noticing swelling in the legs is a critical indication of chronic venous insufficiency and prompts further evaluation and management of the condition.