Diabetic foot is a complication of diabetes, relatively late-stage and severe. One of the most dreadful consequences it can cause is amputation, leading to lifelong disability. Many patients worry about developing diabetic foot and should pay attention to the early stages of diabetic foot, which actually manifest as changes in the blood vessels and nerves. For example, vascular changes can make certain areas of the skin appear whiter and cooler, and the pulsation of the dorsal artery of the foot may weaken. Nerve changes are characterized by numbness, tingling, or alternating sensations of heat and cold in the foot, as well as other abnormal sensations. These are all signs of complications and early manifestations.