Diabetes may cause leg pain. 1. Intermittent claudication: when diabetic patients have peripheral vascular disease, the blood supply to the lower limbs will be insufficient, and in severe cases, walking can be very difficult, and even intermittent claudication as well as calf pain. 2. Peripheral neuropathy: when diabetic patients have poor blood sugar control, it will lead to peripheral neuropathy, such as pain, numbness, abnormal sensation and other symptoms of the limbs. 3. Lower extremity skin infection: diabetic patients with lower extremity ulcers, if poor glycemic control and accompanied by diabetic neuropathy and vasculopathy, prone to skin infections, ulcers and tissue destruction, which can cause pain. Diabetic patients with leg pain, it is recommended to seek medical attention in time to avoid delaying the condition.