Case Report April 11, 2019

Arnold-Chiari Type I Manifesting as Bipolar Disorder

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Prim Care Companion CNS Disord 2019;21(2):18l02368

Article Abstract

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Arnold-Chiari malformation is a group of congenital disorders with 4 subtypes differentiated by severity and clinical features. Arnold-Chiari malformation type I (ACM-I) is the most common and is defined by the cerebellar tonsil herniating caudally into the foramen magnum. ACM-I usually features various symptoms that are manifest by resulting cranial neuropathies, increased intracranial pressure, and cerebellar dysfunction in the earlier years of life.