The cervical spine is divided into 7 sections, and the symptoms corresponding to each section of the cervical spine should be the symptoms of the herniated disc in the corresponding cervical section, which compresses the spinal nerve. There is a dural sac in the back of the spinal canal of the cervical spine, and the dural sac is a tough structure through which the spinal nerve passes, and when the herniated cervical disc compresses the dural sac, resulting in the compression of the spinal nerve within it, a series of clinical manifestations will appear. When the nerve root is compressed by a herniated cervical disc in the 3rd cervical vertebra, numbness in the neck can occur; when the nerve root at the 4th cervical vertebra is compressed, numbness in the shoulder can occur; when the 5th vertebra is herniated and compressed, numbness in the lateral side of the upper arm can occur; when the 6th vertebra is compressed, numbness in the lateral side of the arm can occur. The symptoms vary with the compression of different cervical nerves. You can choose to go to the hospital for further consultation to determine the site of compression through CT and MRI of the cervical disc.