Diabetics may lose sensation in their feet, usually starting at the toes. This may cause them not to feel sharp objects that can hurt them. It is important to check the feet each day for foreign bodies, bleeding, signs of infection, and call the doctor right away if the above are seen. Diabetic neuropathy can also cause painful burning and tingling, and may de-regulate blood flow, causing a Charcot foot when there is too much blood flow. For more information, please click this link.