Diabetic neuropathy is a nerve disorders caused by diabetes. People with diabetes can, over time, develop nerve damage throughout the body. Some people with nerve damage have no symptoms. Others may have symptoms such as pain, tingling, or numbness in the hands, arms, feet, and legs. This is caused by the damage of nerves as a result of prolonged elevated levels of blood glucose. Different types of diabetic neuropathy include peripheral neuropathy, focal neuropathy, autonomic neuropathy, and proximal neuropathy.