The occurrence of venous diseases among adults is approximately 77% in females and 57% in males. These conditions are prevalent, progressive disorders that significantly affect individuals socially, physically, and psychologically, often resulting in various venous abnormalities that hinder effective blood circulation in the lower limbs. This review provides a comprehensive overview of venous diseases, focusing on their pathophysiology, symptoms, causes, risk factors, diagnosis, and complications. The symptoms associated with venous diseases are diverse and can include pain, heaviness, swelling, ulcers, and skin changes. Risk factors such as age, obesity, hormonal influences, and genetic predispositions are discussed in relation to their contribution to disease progression. The therapeutic modalities for managing venous diseases are explored, with a particular emphasis on natural products in alleviating symptoms and improving vascular health. Natural compounds, i.e., flavonoids, play a vital role in the circulatory system, supporting blood vessels and promoting healthy blood flow, in addition to their vasoprotective, antioxidant, anti-inflammatory, and anti-platelet properties. Overall, the ongoing research efforts on the efficacy of natural products will significantly enhance the management of several venous diseases in the coming years.