Always feel cold arms, may be related to the following reasons: First, there is not enough exercise. This situation is seen in young female patients, who often do not exercise, and often used to curl up in one place, play cell phones or computers for a long time, will make the end of the limbs due to poor blood circulation, and lead to cold. Second, due to the relevant vascular disease caused. Such as due to thrombosis or tumor and other factors, resulting in the thinning of the diameter of the blood vessels, or blood flow slowdown, may produce the distal extremities of the cold, purple situation. Third, it is caused by peripheral nerve lesions, due to cervical spondylosis of the nerve root type. In addition to the common radiating pain, numbness and weakness, this type of disease may also produce abnormal sensations, of which chilliness is one. Finally, this symptom may also be caused by what Chinese medicine calls Yang deficiency. Patients in this category often stay up late or don’t exercise often, which can lead to a lack of Yang energy in the body, which may produce chills at the end of the limbs at this time.