What does it mean if someone i know has a purple color all over his legs? he showed it to me last wk, i told him to go to the er. he had black spots too, does he have gangrene? and are his legs going to have to come off cause of it, just wondered.

Good Advice: Changes in the color on the skin on the legs can come from a number of different issues including blood flow changes or infections. You gave your friend good advice to seek care with their physician. If untreated, infection or blood flow issues (peripheral vascular disease) may eventually cause enough problems that amputations are needed.