Hearing loss may be unilateral or bilateral but is usually bilateral. Degree of hearing loss can vary. Complaints of muffled hearing or tinnitus are common. Otosclerosis Otosclerosis develops over time. This causes a progressive conductive hearing loss that is generally flat.
Word recognition is usually excellent when speech is sufficiently loud.
The condition is caused by stapedial fixation in the oval window, stiffening the middle ear system. Onset usually occurs for patients aged 15-45 years and is more common for women than men. Half of patients report family history of otosclerosis. M ni re Disease M ni re disease affects the cochlear and vestibular systems. Attacks lasting from 20 minutes to 24 hours generally include some combination of vertigo, hearing loss, sensation of aural fullness, and tinnitus.