“…Unlike unilateral facial paralysis, only 20% of bilateral paralysis is idiopathic [ 2 ]. The most important causes of bilateral facial paralysis are trauma, infectious diseases (infectious mononucleosis, syphilis, bilateral otitis media, herpes zoster, Lyme disease, and meningitis), neurological diseases (multiple sclerosis, neoplasms, or stroke), and other diseases, the aetiologies of which are uncertain (Guillain-Barre syndrome, sarcoidosis, Melkersson-Rosenthal syndrome, and leukaemia) [ 3 ].…”