Diabetic neuropathy is nerve damage that can occur from diabetes. It is characterized by progressive loss of nerve function. The most common type is peripheral neuropathy, which often affects the lower limbs first before moving up. Symptoms depend on the nerves affected but usually include numbness, tingling, or pain in the feet. Investigations help identify the type of neuropathy and treatments aim to control blood sugar levels, care for the feet, and manage pain through medications.