Itching in the back like ants crawling, mainly due to various causes of abnormal sensation of the sensory nerves in the back, resulting in the symptoms, the common causes involve the following. First, the back is locally stimulated by adverse physical and chemical properties, such as moisture or sudden cold or hot stimulation, which can lead to abnormal local dermal nerve sensation, resulting in uncomfortable symptoms. Second, it can also be seen in the back muscle strain and injury, due to strain and injury caused by local tissue congestion, edema, inflammatory infiltration, blood circulation is restricted, resulting in a series of relative hypoxia, ischemia, anaerobic metabolism and other changes, resulting in abnormal nerve sensation. Third, it can also be seen in spinal diseases, including cervical spondylosis, due to nerve root compression will also appear corresponding to the numbness and itchiness of the back dominant region.