Question: what can cause hearing loss in adults?
Answer: Otosclerosis. This is a middle ear disease. ... 
Ménière's disease. This is an inner ear problem. ... 
Autoimmune inner ear disease. An autoimmune disorder is one where your body attacks itself. ... 
Ototoxic medications. ... 
Very loud noise. ... 
Acoustic neuroma. ... 
Physical head injury. ... 
Presbycusis.