Ulcers, which are open sores in the skin, occur when the outer layers of the skin are injured and the deeper tissues become exposed. They can be caused by excess pressure due to ill-fitting shoes, long periods in bed, or after an injury that breaks the skin. Ulcers are commonly seen in patients who have diabetes, neuropathy or vascular disease. Open wounds can put patients at increased risk of developing infection in the skin and bone.
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