_:vb50938021 . _:vb50938021 "url:https://www.omim.org/entry/606552"^^ . _:vb50938021 "An episodic ataxia that is characterized by vertigo and diplopia."^^ . _:vb50938021 . _:vb50938021 . _:vb50938021 . _:vb50938021 .