Malignant otitis externa is a rare but potentially fatal disease of the external auditory canal seen mostly among elderly. Otitis externa is occasionally associated with middle ear infection or upper respiratory infections such as colds. Malignant otitis externa moe is a rare, lifethreatening complication of otitis externa, an inflammation of the outer ear, that involves extensive infection of the external auditory channel and adjacent osseous and soft tissues. Diagnosis and medical treatment of otitis externa in the dog and cat. Otitis media is an infection that affects the middle ear and arises in the tympanic cavity the hollow space between the tympanic membrane or ear drum and inner ear, whereas otitis externa is an infection in the external ear and the ear canal. Otitis externa often occurs in the summer from swimming in polluted water. Symptoms include pain, discharge, and hearing loss if the ear canal has swollen shut.
External otitis acute ear, nose, and throat disorders. In contrast to the chronic otitis externa, acute otitis externa aoe is predominantly a bacterial infection, 2 occurs rather suddenly, rapidly worsens, and becomes very painful. Acute external otitis is a polymicrobial infectious disease. There are o titis externa is an inflammatory process of the external auditory canal.
Management of most cases of external otitis involves topical drug therapy rather than oral antibiotics, as the disease is limited to the skin of the ear canal. Acute otitis media infectious diseases jama pediatrics jama. Enfermedades adquiridas del oido externo pdf free download. Otitis externa, also known as swimmers ear, is an inflammation of the outer ear. Links to pubmed are also available for selected references. Infection of the external auditory channel generally results from previously inflicted lesions. Otitis externa, in particular, is likely to be seen by a busy small animal clinician at least once a day. The chemicals in hair spray or hair dye may irritate the ear canal as well and increase the risk of infection.
Otitis externa medigoo health medical tests and free. In one recent study,1 otitis externa was found to be disabling enough. The clinical manifestations and diagnosis of external otitis are discussed elsewhere. Acute otitis media otitis externa can be secondary to otorrhoea from otitis media, particularly common in younger children, especially if they have had ventilation tubes grommets inserted in the tympanic membrane. Pdf otitis en perros pdf otitis en perros pdf otitis en perros download. H620 otitis externa en enfermedades bacterianas clasificadas en otra parte gpc. Malignant otitis externa, a destructive infection of the external auditory canal. Diagnosis and treatment acute otitis media aom is one of the most common causes of medical visit and antimicrobial use in children. Treatment is with debridement and topical drugs, including. The differential diagnosis of otitis externa includes.
Malignant otitis externa refers to temporal bone osteomyelitis. The most important step in treating an aoe is an exhaustive, gentle cleansing, suction and instrumentation of the external. This inflammation often begins when infections that cause sore throats, colds, or other respiratory or breathing problems spread to the middle ear. Different exciting, aggravating and precipitating factors in the formation of granulomatous tissue in this form of otitis externa are also discussed. Some people get otitis externa repeatedly, especially if they clean their ears too vigorously. Pathogenesis, clinical features, and diagnosis, section on diagnosis. Acute otitis externa presents with the rapid onset of ear canal inflammation, resulting in otalgia, itching, canal edema. Aspergilus niger, candida albicans, aspergilus fumigatus y penicillium. Full text full text is available as a scanned copy of the original print version. The skin which lines the outer ear canal becomes red and swollen due to infection by bacteria a germ or bug or fungus.
This infection is very common and affects all age groups. External otitis is an acute infection of the ear canal skin typically caused by bacteria pseudomonas is most common. The difference between otitis media and otitis externa. It is an osteomyelitis of the temporal bone and skull base, which takes its origin from the external ear canal and spread to the mastoid, middle ear. With correct assessment of the different types of otitis externa, rapidly.
Anatomy and physiology consists of the auricle and eam skinlined apparatus approximately 2. While the majority of cases are from bacterial infection, fungal, allergic and dermal disease dermatitis should be considered. Granulomatous otitis externa reactive granuloma springerlink. Any information contained in this pdf file is automatically generated from digital material submitted to epos by third parties in the form of scientific presentations. Otitis externa description, causes and risk factors. The rxfiles acute otitis media february, 2001 1 wang eel, einarson tr, kellner jd, conly jm. Otitis externa is very common especially among teenagers and young adults.
A rationale management approach requires a thorough clinical exam and updated knowledge on. Background malignant otitis externa moe, an aggressive infection involving the external auditory canal and temporal bone was first reported in the literature by toulmouche in 1838. The purpose of this study was to isolate, identify and determine the antimicrobial susceptibility of organisms causing otitis externa oe. Am fam phys 1998 3 sandford guide to antimicrobial therapy 2000, pg 7. The strategies for preventing acute external otitis are similar to those for treatment. An essential guide to diagnosis and treatment provides a comprehensive source of information on the relevant structure, function, medical treatment, and surgery of the ear, from otodectes cynotis to pseudomonas aeruginosa. Get a printable copy pdf file of the complete article 455k, or click on a page image below to browse page by page.
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