The mechanism for the development of an<unk>  depends upon the specific etiology of the<unk> . For example, varicose<unk> s and prolonged bed rest both may induce<unk> s due to slowing the flow of blood through superficial<unk> s.
Superficial vein thrombosis
Varicose veins
Superficial thrombophlebitis
Popliteal artery aneurysm
Venous ulcer
Septic thrombophlebitis
Pseudothrombophlebitis
Raynaud syndrome