MedicineNet.com offers several pictures of diabetic leg ulcers. Diabetics usually have high chances of developing sores or ulcers, and they are one of the main reasons for extended hospital stays, says MedlinePlus.
Diabetic foot ulcers occur due to a combination of many factors including trauma, irritation, poor blood circulation and the inability to feel in the foot, says American Podiatric Medical Association. Patients suffering from diabetes for many years can develop neuropathy, a reduced ability to feel due to nerve damage. Vascular disease in diabetics complicates the ulcers, making it hard for them to heal. Increased blood sugar levels reduce the body's ability to fight infections.