This document defines diabetic peripheral neuropathy and describes its pathophysiology, types, clinical presentation, diagnosis, and treatment. The key points are: 1. Diabetic peripheral neuropathy is nerve damage caused by diabetes and affects over 50% of patients with diabetes for over 25 years. 2. It results from high blood glucose damaging nerves over time and impaired blood flow to nerves. 3. The most common type is distal symmetric polyneuropathy, which causes numbness and pain in the feet and legs that gradually moves upward. 4. Treatment focuses on improving blood glucose control, pain medications like antidepressants, anticonvulsants, opioids, and nerve block procedures for severe cases.