These are vein dilations that can, with time, become tortuous. The most common (truncal varicose veins) are formed near the saphenous and collateral veins. Peripheral networks can also be formed (reticular varicose veins) on the rear surface of the thighs and legs. Reticular varicose veins are often considered to be only an aesthetic problem. However, they can become venous insufficiency disturbances such as truncal varicose veins.
Varicose veins, in their early stage, give a feeling of heaviness to the legs and ankles and a sensation of fatigue and tension. Then there may be swelling of the legs (oedema) with night cramps. Hypodermitis may also take place (with inflammation of the subcutaneous tissue). Untreated venous insufficiency can become chronic with the presence of ulcers.