A bout of coldness in the back can be caused by a cold back, chronic strain, back fasciitis, cervical spondylosis, and other conditions. 1. Cold back: Cold stimulation of the back leads to vasoconstriction of the blood vessels in the back and poor blood circulation, which causes a burst of cold in the back. 2. Chronic strain injury: Frequent use of the shoulders or back to carry out weight-bearing activities will lead to back muscles and tissues labor injury, local blood flow rate is slow, resulting in a burst of cold back. 3. Fasciitis of the back: under the incorrect posture or external pulling, it will lead to aseptic inflammatory reaction of the fascia of the back, affecting the blood circulation of the back, and the coldness of the back. 4. Cervical spondylosis: degenerative changes in the cervical spine may compress the surrounding nerve roots, causing abnormal sensory function in the innervated area of the nerve roots, resulting in a cold back. If the symptoms continue to be unrelieved, it is recommended to go to the hospital in time to find out the cause of the disease and follow the doctor’s instructions for effective and professional treatment.