What condition is characterized by retrograde venous flow of abnormal duration?

Venous valvular incompetence is a condition where the valves within the veins are unable to close properly, leading to retrograde flow of blood. This abnormal flow occurs when blood moves backward in the veins instead of flowing toward the heart, which can result in venous stasis and various complications. The retrograde flow can be sustained over an extended duration, contributing to symptoms such as swelling, pain, and varicose veins.

In the context of this condition, the failure of the venous valves to function correctly means that the mechanisms that usually prevent backflow are compromised. This prolonged retrograde flow is a hallmark of venous valvular incompetence, distinguishing it from other conditions like venous occlusion, which involves blockage that would not typically lead to prolonged backflow, or venous compression, where external pressure on the vein can lead to reduced flow but not retrograde flow specifically. Neovascularization refers to the formation of new blood vessels, which is unrelated to the abnormal flow of blood in veins.