Most people think of ulcers as a stomach problem.
Actually, an ulcer is a general term for any open sore, whether it's inside your stomach or not. On the feet, ulcers generally develop on the bottom of your foot. It can frequently be a sign of diabetes or insufficient blood flow to the feet. The consequences of not having open foot sores treated professionally can be extremely serious. Approximately one-third of all foot amputations are due to complications from foot ulcers.