After winter, the weather gradually turns cold, and the fear of cold hands and feet becomes a problem for many people. Cold hands and feet are very common in the general population, with an incidence of up to 10% in young and middle-aged women. In clinical practice, patients with cold hands and feet, joints and back, many patients not only have symptoms in winter, but also fear cold, wind and air conditioning fans in summer, but the symptoms are more pronounced in winter, and numbness and pain can occur. The above symptoms should be identified as a functional or organic lesion. First of all, organic lesions should be excluded. There are three common organic lesions. 1, atherosclerotic stenosis, atherosclerosis mostly occurs in men over 40 years old. The blood vessels are the channels for blood flow, and when atherosclerosis occurs, plaque will form in the blood vessels, causing narrowing and occlusion of the pathway, and if the narrowing reaches a certain level, the limbs, especially the hands and feet, will show symptoms of coldness. It is important to note that if the patient has unilateral limb cold pain and weakened pulse, it is often caused by pathological vascular stenosis and ischemia, rather than functional problems. 2, thrombo-occlusive vasculitis. Thrombo-occlusive vasculitis occurs in young men between the ages of 20-40, with a long history of smoking. The patient’s limb ischemia at the beginning of the disease, symptoms to the end of the limb skin cold, pale, the functional reasons for this period of time than organic factors; and the development to the stage of nutritional disorders, the condition gradually aggravated persistent pain symptoms; and then continue to develop to severe arterial stenosis or occlusion, may appear ulcer formation, gangrene and other serious symptoms, need to pay attention. 3, aortitis. This is a chronic progressive non-specific inflammation of the aorta and its main branches, which can cause stenosis or occlusion at different sites. It is mostly seen in young and middle-aged women and can also cause coldness and pulselessness in the limbs. After the symptoms of cold hands and feet, if the patient is concerned about the above organic disease, the easiest way is to visit the peripheral vascular department or vascular surgery. Depending on the condition, arterial ultrasound is used, which is noninvasive, inexpensive, repeatable, and highly accurate. In addition, cold hands and feet may be complications of other diseases: for example, those with hypoglycemia will have cold extremities, fainting, and head sweating; in addition, cold hands and feet may also be an outward manifestation of pre-shock, blood loss, trauma, cardiovascular disease, and severe pain, signaling a serious disease that needs attention. In addition to organic lesions, factors such as microcirculatory disorders, peripheral artery spasm, and abnormal peripheral nerve sensation can also lead to cold limbs. The main manifestation is a temporary decrease in the skin temperature of the limb, and the skin temperature returns to normal after warmth or rest; or a subjective feeling of coldness, but the limb temperature is normal. At this time, the pulsation of the dorsalis pedis artery and posterior tibial artery of the lower limb, and the radial artery and ulnar artery of the upper limb and other peripheral arteries are normal, and there is no problem with clinical auxiliary examination, which can be distinguished from organic lesions. Diet Exercise Improve microcirculation Cold hands and feet often have certain triggers, mainly wind and cold. According to Chinese medicine, yang energy defends the outside and has a defensive function, running on the body surface during the day and entering the inside at night. When people go to sleep, their resistance decreases, and wind and cold evil can easily invade their bodies. Cao Jianchun said that there are often patients in the clinic with cold hands and feet after the wind, cold symptoms, it is recommended that regardless of the winter and summer seasons to sleep well covered with clothes and quilts, the upper shoulders, the lower should cover the soles of the feet. For organic lesions, it is necessary to go to a hospital specialist as early as possible. For functional changes, it is necessary to pay attention to warmth in daily life and take appropriate measures to regulate care. 1. Diet regulation. The reason for cold hands and feet is the deficiency of yang energy does not reach the four ends, suitable for regulating with food that benefits qi and warms yang. The common ones are cinnamon, cinnamon, sorrel and spicy seasonings. China’s southern and northern food habits are very different, the northern staple food to wheat-based, the southern eat more rice. Wheat is flat and cool, suitable with chili, pepper, mustard, garlic, green onions and other spicy seasonings can make the food with a more balanced, to promote blood circulation. In addition, foods supplemented with vitamin E and niacin help smooth peripheral blood circulation. Foods rich in vitamin E include tomatoes, carrots, olives, and lettuce. Niacin is richer in animal liver, eggs, milk, brown rice, whole grains, sesame seeds, shiitake mushrooms and other foods that help stabilize the nervous system and circulatory system, which can expand the peripheral blood vessels and improve the symptoms of cold hands and feet. 2, exercise regulation. People with cold hands and feet symptoms can also do more hand and foot exercises in their lives to promote blood flow, speed up the metabolic rate and improve the problem of poor peripheral circulation. If it is cold outside, you can do about 20 minutes of preparatory activities indoors before going out, and jump lightly up and down with your toes taut in place. Many people have the habit of walking exercise, Cao Jianchun suggested that we can not only exercise the lower limbs when walking, hands to follow the pace of the rhythm of a substantial swing arm, elbow swing to the chest heart at the same height. “Many people activities exist more lower limb activities, upper limb activities less misconceptions, upper and lower limbs through the body coordination of movement is beneficial to health.”