Epidemiology Age The incidence of otosclerosis increases with age. u The most common age group presenting with hearing loss from otosclerosis is 15-45 years, s however it has been reported to manifest as early as 7 years and as late as the mid 50sEpidemiology ◼ Age ◼ The incidence of otosclerosis increases with age. ◼ The most common age group presenting with hearing loss from otosclerosis is 15-45 years, ◼ however it has been reported to manifest as early as 7 years and as late as the mid 50s