[A Case of Hearing Loss Preceding Anterior Inferior Cerebellar Artery Infarction Syndrome With a Progressive Course].

Anterior inferior cerebellar artery (AICA) syndrome is a well-known symptomatic disorder. AICA syndrome is one of the causes of sudden hearing loss seen in recent years, but most of these cases were diagnosed as hearing loss preceded by other symptoms. Due to variations in AICA, we consider that many cases are actually not recognized as AICA syndrome. In this report, we describe a case of AICA syndrome preceded by hearing loss and describe its course of progression.