Cervical spondylosis does not cause diarrhea. Cervical spondylosis arises because its main lesion site is the neck. The main causative factors are cervical disc herniation, cervical osteophytes, and hypertrophy and calcification of the ligaments in the cervical spinal canal, in addition to the presence of cervical subluxation. These disease factors lead to irritation of the nerve roots of the cervical spine and compression of the cervical dural sac and spinal cord, resulting in a series of nerve injury symptoms. Cervical spondylosis is primarily located in the cervical spine and does not cause any symptoms in the abdomen. Diarrhea is mainly caused by digestive system lesions, especially the stomach or lower digestive tract lesions to cause diarrhea, so cervical spondylosis does not cause digestive system diseases.