“…Sudden, transitory and permanent deafness are considered rare manifestations [Ben-Zacharia, 2011;de Seze et al, 2001;Hellmann et al, 2011;Oh et al, 2008;Peyvandi et al, 2010;Rodriguez-Casero et al, 2005;Zaffaroni et al, 2001]. Although always described as sensorineural, the involvement of central auditory pathways occurs to different degrees, from slight to extensive losses, with a variable pattern of affected frequencies on audiometry [Cadoni et al, 2006;Oh et al, 2008;Prakash et al, 2006;Rodriguez-Casero et al, 2005;Tu and Young, 2004].…”