Cervical spondylosis does not cause diarrhea. Cervical spondylosis can cause many symptoms, but the main one that is affected is the nervous system. Cervical spondylosis refers to protruding cervical intervertebral discs, hyperplastic cervical bones, or hypertrophied or calcified intravertebral ligaments compressing nerve roots, dural sacs, and spinal cord, producing a series of symptoms of nerve damage. It commonly leads to symptoms such as weakness in the limbs, pain and numbness in the upper limbs, head dizziness, nausea, vomiting, and even sudden collapse. However, cervical spondylosis does not cause diarrhea symptoms. Diarrhea is mainly caused by water reabsorption disorders due to some etiology of the digestive system, so cervical spondylosis does not trigger diarrhea symptoms.