Diabetic Peripheral Neuropathy (DPN) is a type of nerve damage that can occur in people with diabetes. It is caused by high blood sugar levels damaging the small blood vessels that supply the nerves. Symptoms of DPN include numbness, tingling, burning, and pain in the feet, legs, and hands. In severe cases, it can lead to muscle weakness, loss of balance, and difficulty walking. Treatment for DPN includes controlling blood sugar levels, taking medications, and lifestyle changes.