A person with diabetic issues and an untreated an infection within a foot or leg may well create gangrene. Gangrene includes tissues dying as a result of extreme infection or reduced blood supply.   There is a problem with info submitted for this request. Review/update the data highlighted underneath and https://www.sgvascularctr.com/swollen-leg-why-do-i-have-it-and-what-can-i-do/