Foot ulcers are open sores that can happen to people with diabetes.
The ulcers can range from minor sores to serious damage of tissues in the foot if the sore becomes infected. When you have diabetes, the flow of blood to your feet can be affected. When less blood is flowing, it is harder for the body to fight off infections and heal itself. As a result, any sores on your feet can become infected. Without treatment, theses infections can cause serious damage.