Expected headings
"Tympanogenic"
"Post-traumatic"
"Meningogenic"
"Haematogenic"
"Autoimmune"
"Labyrinthitis is a potential complication of acute otomastoiditis with the spread of infection or of toxins from the middle ear to the inner ear via either the round window or oval window. It is therefore typically unilateral. Typically patients will have sensory neural hearing loss (SNHL) and vertigo. When SNHL is fluctuating, a perilymphatic fistula should be suspected - typically seen in the setting of coexistent cholesteatoma or previous ossicular surgery (e.g. prosthetic stapedectomy)"