The detail information of Otitis externa
Basic Information

Disease Description: An infection of the external structures of the ear.

Inherit Mode: -

Disease Symptom: The most common symptoms of otitis externa and otitis media are pain, head shaking, scratching at the external ear flaps, and bad odor. In a physical examination by a veterinarian, a dog with the condition may exhibit redness and swelling of the external ear canal, scaling skin or obstruction of the ear canal. Signs such as tilting the head, anorexia, uncoordination, and occasional vomiting may indicate the development of otitis media, or otitis interna, if the infection and inflammation spreads to the inner ear.

Disease Cause: Otitis externa and otitis media can be caused by a variety of things. The primary causes are parasites, food allergies, drug reactions, foreign bodies (e.g., plant awns), accumulation of hair, dead skin buildup (keratinization), and autoimmune diseases. Other factors that may contribute to the onset of the inflammatory conditions include bacterial infections, mixed infections caused by bacteria and fungal species, and progressive changes in the environment of the outer ear canal. Excessive moisture caused by swimming, or overzealous, abrasive, and improper ear cleaning may also lead to otitis externa and otitis media.

Disease Diagnose: These two conditions can be diagnosed in several ways. For instance, X-rays may be used to diagnose otitis media; an magnetic resonance imaging (MRI) may also be used to identify an accumulation of fluid or soft tissue growth in the middle ear. Other ways of diagnosing these conditions include skin scrapings from the dog's ear flaps to test for parasites, and skin biopsies to check for autoimmune diseases. However, the single most important tool for diagnosing otitis externa and otitis media is a microscopic examination of the ear discharge (aural exudate).

Treat Method: Treatment for otitis externa and otitis media usually involves outpatient care, unless the inflammation or infection has moved into the inner ear. In most cases of otitis externa, a topical therapy following a complete cleansing of the external ear is an effective resolution to the problem. The topical therapy may consist of antibacterial, corticosteroid, anti-yeast, and antiseptic drops. In severe cases of otitis externa and otitis media -- where the presence of infectious organisms has been confirmed -- oral antibiotics and antifungals may be prescribed. Corticosteroids may also be used to reduce the animal's pain and swelling.

Breeder Advice: Follow-up treatments for otitis externa and otitis media involve repeat examinations of the ear discharge and control of any underlying diseases. You may be asked to routinely cleanse the dog's ear to prevent a recurrence. With the proper therapy, most cases of otitis externa will resolve within three to four weeks, whereas otitis media takes a considerably longer amount of time to treat it, and up up to six weeks to be resolved. If these conditions persist over long periods of time, and are not treated, they may lead to deafness, facial nerve paralysis, otitis interna, and (rarely) meningoencephalitis.

Disease Description Source: Link

Associated Diseases
Disease Name Other Name Mode of inheritance Link ID Possible OMIM ID Gene
Otitis externa, susceptibility to - - - -
Associated Breeds
iDog Breed Number Breed Name Personality Height Weight Breed Source
CB74 Chinook Patient, smart, willing to please; a devoted family dog 61-66 cm (male), 55.9-61 cm (female) 24.9-40.8 kg (male), 22.7-29.5 kg (female) United States
CB78 Cocker Spaniel Happy, smart, gentle 36.8-39.4 cm (male), 34.3-36.8 cm (female) 11.3-13.6 kg (male), 9.1-11.3 kg (female)
CB98 English Toy Spaniel Affectionate, Alert, Merry 22.9-25.4 cm 3.6-6.4 kg England
CB111 German Short-Haired Pointer Friendly, smart, willing to please 58.4-63.5 cm (male), 53.3-58.4 cm (female) 24.9-31.8 kg (male), 20.4-27.2 kg (female) Germany
CB259 Wire-Haired Vizsla Calm and gentle around the house; an exuberant hunter on land or lake 57.8-64.1 cm (male), 54-59.7 cm (female) 24.9-29.5 kg (male), 20.4-24.9 kg (female) Hungary
CB268 Miniature Poodle Intelligent, Eager-to-please , Charming companion 25-38 cm 4.5-6.8kg France&Germany
CB270 Toy Poodle Intelligent, eager to please, quick to learn and an affectionate, loyal pet. under 25 cm
References
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Health-related welfare prioritisation of canine disorders using electronic health records in primary care practice in the UK. BMC Vet Res 15:163, 2019.
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2017 Kaimio,M.,Saijonmaa-Koulumies,L.,Laitinen-Vapaavuori,O.: :
Survey of otitis externa in American Cocker Spaniels in Finland. Acta Vet Scand 59:14, 2017.
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2017 O'Neill,D.G.,Coulson,N.R.,Church,D.B.,Brodbelt,D.C.: :
Demography and disorders of German Shepherd Dogs under primary veterinary care in the UK. Canine Genet Epidemiol 4:7, 2017.
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2005 Yamashita,K.,Shimizu,A.,Kawano,J.,Uchida,E.,Haruna,A.,Igimi,S.: :
Isolation and characterization of staphylococci from external auditory meatus of dogs with or without otitis externa with special reference to Staphylococcus schleiferi subsp. coagulans isolates. J Vet Med Sci 67:263-8, 2005.
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2003 Cole,L.K.,Kwochka,K.W.,Kowalski,J.J.,Hillier,A.,Hoshaw-Woodard,S.L.: :
Evaluation of an ear cleanser for the treatment of infectious otitis externa in dogs.[erratum appears in Vet Ther. 2003 Summer;4(2):108] Veterinary Therapeutics 4:12-23, 2003.
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2002 Angus,J.C.,Lichtensteiger,C.,Campbell,K.L.,Schaeffer,D.J.: :
Breed variations in histopathologic features of chronic severe otitis external in dogs: 80 cases (1995-2001) Journal of the American Veterinary Medical Association 221:1000-1006, 2002.
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2002 Chaudhary,M.,Mirakhur,K.K.: :
Studies on occurrence of canine otitis Indian Veterinary Journal 79:748-749, 2002.
2002 Crespo,M.J.,Abarca,M.L.,Cabanes,F.J.: :
Occurrence of Malassezia spp. in the external ear canals of dogs and cats with and without otitis externa Medical Mycology 40:115-121, 2002.
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2002 Hendricks,A.,Brooks,H.,Pocknell,A.,Bond,R.: :
Ulcerative otitis externa responsive to immuno suppressive therapy in two dogs Journal of Small Animal Practice 43:350-354, 2002.
Pubmed reference: 12201444 .
2002 Junco,M.T.T.,Barrasa,J.L.M.: :
Identification and antimicrobial susceptibility of coagulase positive staphylococci isolated from healthy dogs and dogs suffering from otitis externa Journal of Veterinary Medicine Series B 49:419-423, 2002.
Pubmed reference: 12489709 .
2002 Kumar,A.,Singh,K.,Sharma,A.: :
Treatment of otitis externa in dogs associated with Malassezia pachydermatis Indian Veterinary Journal 79:727-729, 2002.
2001 Murphy,K.M.: :
A review of techniques for the investigation of otitis externa and otitis media Clinical Techniques in Small Animal Practice 16:236-241, 2001.
Pubmed reference: 11793879 . DOI: 10.1053/svms.2001.27601 .
2000 Barrasa,J.L.M.,Gomez,P.L.,Lama,Z.G.,Junco,M.T.T.: :
Antibacterial susceptibility patterns of Pseudomonas strains isolated from chronic canine otitis externa Zentralblatt fur Veterinarmedizin - Reihe B 47:191-196, 2000.
2000 Lilenbaum,W.,Veras,M.,Blum,E.,Souza,G.N.: :
Antimicrobial susceptibility of staphylococci isolated from otitis externa in dogs Letters in Applied Microbiology 31:42-45, 2000.
Pubmed reference: 10886613 .
1999 Meyer-Lindenberg,A.,Nolte,I.: :
Otitis externa in the dog and cat [German] Praktische Tierarzt 80:6-+, 1999.
1999 Osthold,W.,Beck,J.: :
Otitis externa in the dog etiology and pathogenesis from a dermatologic view [German] Praktische Tierarzt 80:1048-+, 1999.
1998 Breitwieser,F.: :
Review of bacteriological and mycological investigations in otitis externa of the dogs [Hungarian] Magyar Allatorvosok Lapja 120:88, 1998.
1998 Guedejamarron,J.,Blanco,J.L.,Ruperez,C.,Garcia,M.E.: :
Susceptibility of bacterial isolates from chronic canine otitis externa to twenty antibiotics Zentralblatt Fur Veterinarmedizin - Reihe B 45:507-512, 1998.
1997 Merchant,S.R.: :
Pathogenesis and clinical management of otitis externa in dogs Irish Veterinary Journal 50:448 ff., 1997.
1996 Hallu,R.E.,Gentilini,E.,Rebuelto,M.,Albarellos,G.A.,Otero,P.E.: :
The combination of norfloxacin and ketoconazole in the treatment of canine otitis Canine Practice 21:26-28, 1996.
1996 Heinze,W.,Holz,J.,Konrad,H.,Nattermann,H.: :
The treatment of canine otitis externa with propolis [German] Tierarztliche Umschau 51:240 ff., 1996.
1994 Thibaut,J.,Santis,J.,Zaror,L.,Martin,R.: :
Contribution to the study of external otitis of dogs Archivos de Medicina Veterinaria 26:85-95, 1994.