Episodic Ataxia, Type 5, also known as episodic ataxia type 5, is related to episodic ataxia and familial or sporadic hemiplegic migraine. An important gene associated with Episodic Ataxia, Type 5 is CACNB4 (Calcium Voltage-Gated Channel Auxiliary Subunit Beta 4), and among its related pathways/superpathways are Transmission across Chemical Synapses and MAPK signaling pathway. Affiliated tissues include brain and spinal cord, and related phenotypes are ataxia and dysarthria