Infection: Injuries can breach your skin's natural defense barriers, allowing bacteria into your body. From the feet, such bacteria can be carried by lymph channels up into the legs, spreading the infection (the proper term is lymphangitis). If you have a cellulitis/lymphangitis, you need to see a doctor for antibiotic treatment as soon as possible.
Answered 7/20/2012
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It is infected: Your foot got infected when it was traumatized and the infection is spreading. You need to get this treated by a physician if you have not seen one already.
Answered 11/7/2014
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