Diabetic neuropathy is a peripheral nerve disorder caused by diabetes mellitus that can be very painful. Peripheral nerves are the nerves that go out from the brain and spinal cord to the muscles, skin, internal organs, and glands. Peripheral neuropathy impairs proper functioning of these sensory and motor nerves. The symptoms of diabetic neuropathy are often slight at first. In fact, some mild cases may go unnoticed for a long time. Numbness, pain, or tingling in the feet, or legs may, after several years, lead to muscle weakness. Occasionally, diabetic neuropathy can flare up suddenly and affect specific nerves so that an affected individual will develop double vision or drooping eyelids, or weakness and atrophy of the thigh muscles. Diabetic Neuropathy can cause insensitivity or a loss of ability to feel pain, heat, and cold. Diabetics suffering from neuropathy can develop minor cuts, scrapes, blisters, or pressure sores that they may not be aware of due to the insensitivity. If these minor injuries are left untreated, complications may result and lead to ulceration and possibly even amputation.