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Varicose veins


Varicose veins are swollen and twisted veins under the skin, occurring when tiny valves in the veins are damaged or stop working and can’t stop blood pooling in the veins. Causes can be blood clots in the leg, injury, pregnancy and weight gain. Initially painless, they can cause pain when standing and walking. Treatments include compression socks, injections in damaged blood vessels and surgery. 
Last reviewed: 
February, 2014