Unsteady walking and swaying may be caused by cerebrovascular disease or cervical spondylosis or peripheral neuritis, depending on the form of the patient’s illness. In the case of cerebellar infarction or hemorrhage, the patient may suddenly experience unstable walking, tilting to one side, swaying, and ataxia, and may also experience dizziness, nausea, vomiting, and headache. Unsteady walking and swaying may also be caused by cervical spondylosis, which is mostly seen in spinal cord cervical spondylosis. Because the spinal cord is compressed by intervertebral discs or hypertrophic ligaments in the neck, the conduction of the spinal cord is easily weakened, causing the patient to walk unsteadily and shakily. In addition, patients with vestibular lesions exhibit wobbling and tipping in the sitting position.