Overview of the recent knowledge in epidemiology of chronic venous diseases.Systematic search and discussion of recent studies concerning epidemiology of chronic venous diseases.The more recent epidemiologic studies of venous diseases in which the CEAP classification was used showed a prevalence of 60-70 % CEAP clinical class C0 and C1, app. 25 % for C2 and C3 and up to 5 % for C4 to C6 with skin changes or venous ulcers. The incidence of varicose veins is app. 2 % per year.Chronic venous diseases like varicose veins and chronic venous insufficiency belong to the most frequent diseases in our adult population.