Otitis externa refers to inflammation of the external ear.
It is quite a common condition and may affect up to 10% of people during their lifetime.
It can present in several forms:
There are several known risk factors which include 1:
- a humid environment
- narrow ear canals
- hearing-aid use
- mechanical trauma
It may be associated with several micro-organisms. The commonest include
- Pseudomonas aeruginosa
- Staphylococcus aureus
- 1. Hajioff D, MacKeith S. Otitis externa. BMJ Clin Evid.2015: . Pubmed citation
- 2. Hajioff D, Mackeith S. Otitis externa. BMJ Clin Evid.2010: . Free text at pubmed - Pubmed citation
- 3. Jayakar R, Sanders J, Jones E. A study of acute otitis externa at Wellington Hospital, 2007-2011. Australas Med J. 2014;7 (10): 392-9. doi:10.4066/AMJ.2014.2094 - Free text at pubmed - Pubmed citation
- 4. Kaushik V, Malik T, Saeed SR. Interventions for acute otitis externa. Cochrane Database Syst Rev. 2010; (1): CD004740. doi:10.1002/14651858.CD004740.pub2 - Pubmed citation