We report the first case of Listeria monocytogenes meningoencephalitis associated with anti-GQ1b antibody syndrome in an immunocompetent adult. A prompt diagnosis, made thanks to the multidisciplinary contribution, allowed a combined therapeutic approach leading to final favourable outcome, despite several intercurrent complications.
Keywords: Anti-GQ1b IgG antibody; Bickerstaff brainstem encephalitis; Listeria; Meningoencephalitis; Miller-Fisher syndrome.