What are the causes of varicose veins?
In primary varicose veins the pathological process begins
in the superficial venous system. Venous wall weakness
and valve insufficiency are the main factors. The cause
of this process is unknown but many factors play a part
in their development:
secondary varicose veins the pathological process starts
in the deep system. Deep Vein Thrombosis (DVT), congenital
valvular dysplasia, obstruction, tumor, venous malformation,
arterio-venous fistulae are known cause increased backflow
of blood in the perforating veins to the superficial
venous system. Treatment of secondary varicose veins
is different from primary veins and should be directed
to the cause and not the varicose veins.