Numbness of the back can be caused by cervical spondylosis, dorsal myofasciitis, cerebrovascular disease, cardiovascular disease, etc., and can be consulted in orthopedics, neurology and cardiology. 1. Cervical spondylosis: Long-term improper posture, excessive neck strain, age increase and other factors can cause cervical spondylosis, cervical spondylotic hyperplasia and ligament calcification, etc., which can compress the nerves and cause numbness in the back, and need to be consulted in orthopaedic department for diagnosis and treatment. 2. Dorsal myofasciitis: prolonged back exertion and stimulation by cold factors can trigger myofasciitis of the back, local aseptic inflammation can stimulate the nerves and soft tissues, numbness and discomfort symptoms, need to consult orthopedics for treatment. 3. Cerebrovascular disease: cerebrovascular disease can lead to numbness on one side of the back, mostly numbness and weakness of lateral limbs, accompanied by unfavorable speech, blurred vision, dizziness and other manifestations, need to consult neurology and other departments for treatment. 4. Cardiovascular disease: when coronary heart disease and other cardiovascular diseases attack, the anterior region of the heart and back and other areas of pain, stuffiness, numbness and other symptoms, can be in the cardiovascular internal medicine department. When the back numbness and other uncomfortable symptoms, you should consult a doctor in time and choose the appropriate department for diagnosis and treatment, which is conducive to the early diagnosis and treatment of the disease.