individuals with Early-stage diabetic foot ulcers (DFUs) are open sores or wounds that develop on the feet of diabetes. These ulcers typically occur due to poor blood circulation, nerve damage (neuropathy), or an infection, which are common complications of diabetes.The first signs of a diabetic foot ulcer often include redness, swelling, or irritation at a specific area on the foot. The skin may become fragile and start to break down, creating a wound.