A cold back can be caused by less clothing, slower blood circulation or illness. 1. Less clothing: If you wear less clothing or the weather is cold, the temperature of your body surface may drop, resulting in a cold back. 2. Slower blood circulation: If there is a lack of exercise, which leads to slower blood circulation in the body, it may lead to a cold back. 3. Disease: If the patient suffers from lumbar disc herniation and the nerve root is compressed, sensory dysfunction may occur, which may lead to the patient’s cold back. Diseases such as lumbar and dorsal muscular fasciitis may also lead to a cold back. If the cold back is caused by wearing less clothes or cold weather, just pay attention to keep warm, if the symptoms can not be relieved, should go to the hospital in time for examination to determine the cause of the disease and follow the doctor’s instructions for treatment.