Varicose veins are caused by defective valves in the veins.
Watts
G T
GT
D001775:Blood Circulation; D005260:Female; D006801:Humans; D011247:Pregnancy; D014648:Varicose Veins / Q000209:etiology*; D014680:Veins / Q000503:physiopathology*; D014690:Venous Pressure