Chronic Venous Disease (CVD) affects approximately 38% of the Brazilian population, requiring interventions ranging from clinical management to invasive approaches. Historically, conventional surgery (“high ligation and stripping”) has dominated the therapeutic landscape, but it imposes logistical limitations and operative risks. In contrast, foam sclerotherapy has emerged as the predominant technique due to its low cost and outpatient nature. Although it presents higher recanalization rates, the safety of the method drives a therapeutic transition in the public health system, which aims to optimize resources in the face of a chronic and progressive disease.