What are the symptoms of cerebellar tonsillar hernia and syringomyelia

Patients with this disease may present with a variety of symptoms, including walking instability, dizziness, and ataxia, breathing difficulties, swallowing dysfunction, and hearing and visual impairment, mainly due to cerebellar tonsil herniation into the foramen magnum, which causes compression of the brainstem and cerebellum. Syringomyelia is a major complication of cerebellar tonsillar hernia, which is caused by the herniation of the cerebellar tonsil, vermis, and lower part of the fourth ventricle into the foramen magnum, thus possibly causing some symptoms and signs of cerebellar and brainstem compression.