AOE has a lifetime incidence of 10%.[1] The condition is known to affect people of all age groups but was found to peak in the 7- to 12-year-old age group and to decline in incidence among subjects >50 years of age.[7] One review article estimated that AOE affects 4 in 1000 people annually in the US.[8] In a study done in the UK, the 12-month prevalence of otitis externa was >1% and its prevalence was higher for females than for males up to the age of 65 years.[9] In the same study, the incidence of otitis externa increased towards the end of the summer, especially in the youngest age group (5-19 years old). It is common in warmer temperatures and high-humidity conditions and after swimming.

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