According to Tan, the syndrome may be placed in its own category under types of cerebellar ataxias.[3] This simply means it is a type of disorder that involves the cerebellum becoming inflamed, resulting in lack of control of voluntary movements.[4] Uner Tan syndrome falls into this category because it has similar symptoms to other cerebellar ataxia disorders such as Disequilibrium Syndrome (DES-H) and Cayman Syndrome. These symptoms include dysarthria, nystagmus, and hypoplasia of the cerebellum and vermis.[3]