Causes of sensorineural hearing loss include: Excess noiseBirth injuryHereditary factorsAging Exposure to toxic substances, including drugs like: StreptomycinGentamicinChemotherapy drugsDiureticsSteroidsHeart medicinesQuinineAnestheticsAspirin-containing drugsTumorsCardiovascular diseaseMultiple sclerosis Viruses ( measles , mumps , adenovirus, rubella ) History of meningitis or syphilisExternal t