Dandy-Walker malformation
Dandy-Walker malformation is a congenital brain condition. It occurs when the two hemispheres of the cerebellum of the brain do not form properly. This leads to an increase in cerebrospinal fluid between the fourth ventricle and cerebellum of the brain, which in turn leads these areas to be enlarged. This in turn can then cause hydrocephalus, or an excess of fluid on the brain, generally in the first year of life. Symptoms of this include an increased head size, vomiting and extreme sleepiness. Treatment for Dandy-Walker malformation involves a cerebral shunt to drain the excess fluid. Dandy-Walker can cause issues with movement, coordination, intellectual ability, and other neurological skills.