Numbness in the back can be caused by myofasciitis, spinal cord disease, spinal disease and so on. 1. Myofasciitis: due to back trauma or long-term overwork and cold, can lead to local muscle, fascia and other soft tissue chronic injury, local aseptic inflammation, stimulated by inflammation, can cause local numbness, pain and other uncomfortable symptoms, lying down due to the body static, the pain can be relieved. 2. Spinal cord disease: Inflammation of the spinal cord, demyelinating diseases and spinal cord tumors can lead to local spinal cord nerve compression, resulting in numbness and pain in the back, which can also be accompanied by pain and weakness in the limbs below a certain plane. 3. Spinal diseases: cervical spondylosis, thoracic intervertebral disc herniation, lumbar intervertebral disc herniation, spinal tuberculosis and tumor lesions, as well as vertebral fracture and dislocation caused by trauma and other diseases can lead to damage and compression of the nerves, which can lead to numbness and pain in the back and other discomforts. Numbness in the back should be treated in a timely manner, and appropriate treatment under the guidance of specialists can help relieve the discomfort as soon as possible.