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Otitis externa is an inflammation of the outer ear and ear canal. Animals are commonly prone to ear infection, and this is one of the most common manifestations of allergy in dogs. In dogs, those breeds with floppy ears are more prone, since air flow is limited and a warm, moist environment built up, which is conducive to infection.
This results in clinical manifestations such as purulent dermatitis, otitis externa, conjunctivitis, [7] urinary tract infections, [20] and post-operative infections. [6] Disease is most commonly seen in dogs and cats [20] [6] with canine pyoderma being the most notable manifestation of S. pseudintermedius. [39]
Otitis externa; Other names: External otitis, swimmer's ear [1] A moderate case of otitis externa. There is narrowing of the ear channel, with a small amount of exudate and swelling of the outer ear. Specialty: Otorhinolaryngology: Symptoms: Ear pain, swelling of the ear canal, decreased hearing, [2] difficulty chewing: Types: Acute, chronic [2 ...
The most common aetiology of acute otitis externa is bacterial infection, [5] while chronic cases are often associated with underlying skin diseases such as eczema or psoriasis. [6] A third form, malignant otitis externa, or necrotising otitis externa, is a potentially life-threatening, invasive infection of the external auditory canal and ...
The presence of cerumen (earwax), shed skin, pus, canal skin edema, foreign bodies, and various ear diseases, can obscure the view of the eardrum and thus compromise the value of otoscopy done with a common otoscope, but can confirm the presence of obstructing symptoms.
Dogs with the condition often present with erythema. The axillae, ventral abdomen, distal extremities, inner pinnae; and periocular, perioral, and perianal regions are commonly affected. Pruritus and inflammation may result in self-induced alopecia and excoriation. Otitis externa is present in half of all dogs with atopic dermatitis. [5]
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