Chiari malformation type I
Arnold-Chiari malformation type I is 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.
MONDO:0000115
Chiari malformation
is_a
MONDO:0018075
neural tube defect
is_a
MONDO:0100545
hereditary neurological disease
is_a
Arnold-Chiari malformation type 1
exact
Arnold-Chiari malformation type I
exact
Chiari malformation type 1
exact
Chiari malformation type I
exact