An ulcer is a patch of broken down skin which usually occurs on the foot or on the lower leg. Anyone can develop an ulcer, however, when blood sugar levels fluctuate regularly the skin is less likely to heal properly due to nerve damage. This means that diabetics are more likely to develop ulcers as the nerves that carry the pain signals do not function sufficiently. A wound or ulcer that has not healed after 3-4 weeks is referred to as non-healing. If the ulcer is left untreated it can lead to serious consequences. Stem cell therapy is a new form of treatment which may be able to help diabetics with non-healing ulcers