Arnold-Chiari malformation type I
Synonyms: Arnold-Chiari malformation type 1 | Chiari malformation type 1 | Chiari malformation type I
A central nervous system malformation characterized by caudal displacement of the cerebellar tonsils exceeding 5mm below the foramen magnum with or without syringomyelia. Symptoms vary in onset and severity and include suboccipital headache neck pain vertigo tinnitus ocular symptoms (diplopia blurred vision photofobia nystagmus) lower cranial nerve signs cerebellar ataxia and spasticity. Some affected individuals can be asymptomatic.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http://www.orphadata.org. Data version December 2023
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Arnold-Chiari malformation type I?
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