Very often CVI develops after deep vein thrombosis or trauma to the leg. But it can also occur in healthy people.
The most known risk factors are:- advanced age;
- prolonged standing or sitting;
- sedentary lifestyle;
- obesity;
- pregnancy.
There is also idiopathic chronic venous insufficiency. This diagnosis is established when the cause of violations of venous outflow can not be identified. But many doctors associate this pathology with a previously asymptomatic (“dumb”) deep vein thrombosis of the legs.
Note: predisposition to the development of CVI can be inherited.