Chiari Malformation

Overview

Chiari malformation is a rare abnormality in your brain that causes part of your brain (the cerebellum) and brainstem to extend into your spinal canal. Your condition may be present at birth (congenital), or it may develop as your skull and brain grow. Chiari malformation has four different types (type I, II, III and IV), which have different signs and symptoms.

Why choose Mayo Clinic

• Experience. Mayo Clinic doctors have expertise and experience in treating Chiari malformation and other conditions. Each year, Mayo Clinic doctors treat more than 150 people who have Chiari malformation.
• Team approach. Mayo Clinic doctors trained in brain and nervous system conditions (neurology), brain and nervous system surgery (neurosurgery), brain and nervous system conditions in children (pediatric neurology and pediatric neurosurgery), and other doctors work together to diagnose Chiari malformation and determine the most appropriate treatment for you.
• Efficient system. In Mayo Clinic's efficient system, doctors usually can diagnose your condition and develop a treatment plan within days, not weeks.
• Research. Mayo Clinic doctors conduct research in Chiari malformation and other neurological conditions and conduct clinical trials.

Mayo Clinic in Rochester, Minn., is ranked among the Best Hospitals for neurology and neurosurgery by U.S. News & World Report. Mayo Clinic in Scottsdale, Ariz., and Mayo Clinic in Jacksonville, Fla., are ranked high performing for neurology and neurosurgery by U.S. News & World Report. Mayo Clinic also ranks among the Best Children's Hospitals for neurology and neurosurgery.

Read more about Chiari malformation at MayoClinic.com.