Diabetic patients do you know that the blood vessels in your extremities can become poorly ventilated, possibly due to narrowing of the arteries, resulting in insufficient blood supply to the limbs and ischemic lesions in the hands and feet. Common symptoms of limb ischemia include cold hands and feet, fear of cold, such as sleeping at night always feel feet or hands can not warm over, feel the feet is cold; some patients are walking for a period of time, the calf belly pain, numbness or leg “cramps”, toes numb, need to stop to rest for a while, and then can continue to walk; when washing feet, if If you pay attention to the color of the skin below, you may find that the color of your feet is white and bloodless. In severe blood vessel narrowing and even less blood supply, you will feel numbness and pain in your toes and feet at night when you sleep, and you need to sit up and rub your toes and feet with your hands or get out of bed and walk around to feel comfortable. In more severe cases, blackening and ulceration of the fingers and toes may occur. In some cases, diabetic patients develop unexplained infections, ulcers, redness, swelling and pain in their hands and feet, which progress rapidly and worsen. These are related to the narrowing and blockage of blood vessels, which are medically known as diabetic foot syndrome, diabetic foot damage, diabetic gangrene, diabetic arteriosclerosis occlusive disease, etc., and are one of the complications of diabetes. Therefore, diabetic patients should pay attention to the care of their hands and feet in daily life and pay attention to the presence of the above-mentioned manifestations. If this is not clear or if the relevant examination of the occlusion of the blood vessels in the limbs has not yet been performed, they should go to the hospital to have their vascular condition evaluated by a doctor.