A foot ulcer is a wound that forms for a number of reasons. A wound can form because of diminished or restriction in circulation, known as Peripheral Artery Disease (PAD). An ulcer can also form in an area of increased pressure when there is numbness of the nerves known as peripheral neuropathy.

A foot ulcer is a medical emergency and must be taken very seriously. A foot ulcer or wound is very susceptible to infection, which puts the person's limb, and even life, at risk. An infected foot ulcer is a main cause of amputation of the foot or leg. If addressed early, however, a foot ulcer can be healed and measures can be taken to prevent it from occurring again.