Chiari I Malformation
Chiari type I is a condition in which the bony space enclosing the lower part of the brain is smaller than normal. Crowding causes the cerebellar tonsils to push through the skull and down into the spinal canal. The herniated tonsils block the normal flow of cerebrospinal fluid. Symptoms vary widely, but the most common include severe headache at the back of the skull, neck pain, dizziness, numbness in the hands, and sleep problems. Mild symptoms are treated with monitoring and medication. For severe symptoms, surgery may be needed to remove bone and enlarge the space.
Chiari I Malformation.pdf