89:), and this moist surface layer of skin can become colonized by bacteria, although the skin itself is not infected. The affected area is usually painful, as nerve endings are exposed when the surface of the skin is eroded. Hair which remains in the affected area holds in the moisture and further irritates the skin surface. Continued itching by the dog can cause the affected area to enlarge rapidly in only a few hours.
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The dog persistently licks, chews, scratches or rubs at a focal area of skin, which quickly causes hair loss. The skin becomes red, moist and weeps. The affected area is obviously defined and separate from the surrounding healthy skin and coat. Usually only one area of the skin is affected. The size
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There are several aspects to treatment: breaking the "itch-scratch" cycle by clipping the fur and cleaning the skin; addressing the underlying painful or itchy condition which initially caused the animal to begin scratching; and relieving the dog's discomfort, for example with steroid medications.
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Pyotraumatic dermatitis is caused by self-inflicted trauma to the skin, which is incited by pain or irritation, such as infestation with fleas or lice, irritation from clippers, allergic skin diseases, diseases of the anal sacs, inflammation of the ear canal, foreign bodies or irritants within the
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of the affected area is variable. If the area is difficult for the dog to scratch, or if the disease is caught early, hair may still be present. Areas commonly affected include the rump above the tail, the head and neck near the ears, and the top and sides of the lumbar area.
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Pyotraumatic dermatitis is more common when the dog's environment is hot and humid. Dogs with thick undercoats or long fur are most commonly affected, but pyotraumatic dermatitis can occur in any dog. Commonly affected breeds include the
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The hair in and around the affected area is clipped before the skin is cleaned with an antiseptic, rinsed, and dried. The dog may require sedation before the fur is clipped, as skin affected by pyotraumatic dermatitis can be painful.
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from repeated wetting of the coat or moisture in the fur can also be an inciting cause. Flea infestations are the most common inciting factor.
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With treatment, pyotraumatic dermatitis resolves in 3–7 days, but can recur if the inciting factor is not addressed.
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The inciting factor causes the dog to traumatize a small area of skin. The affected skin weeps (that is, it
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422:"Guide to Congenital and heritable Disorders in Dogs: Includes Genetic Predispositions to Diseases"
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Miller, William H. Jr.; Griffin, Craig E.; Campbell, Karen L. (2013). "Pyotraumatic dermatitis".
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335:(7th ed.). St. Louis, Missouri: Elsevier. pp. 677–678.
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Tim, Nuttall; Harvey, Richard G.; McKeever, Patrick J. (2009).
207:(4th ed.). St. Louis, Missouri: Elsevier. pp. 49–50.
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Small Animal
Dermatology: A Color Atlas and Therapeutic Guide
201:"Chapter 3. Bacterial skin diseases. Pyotraumatic dermatitis"
235:"Chapter 18 Dermatologic disorders. Pyotraumatic dermatitis"
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285:"Chapter 1: Pruritic dermatoses. Pyotraumatic dermatitis"
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365:(6th, rev. ed.). London: CRC Press. p. 90.
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237:. In Schaer, Michael; Gaschen, Frederic P. (eds.).
289:Skin Diseases of the Dog and Cat a Colour Handbook
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291:(2nd ed.). London: CRC Press. p. 18.
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241:(3rd ed.). CRC Press. p. 779.
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141:(Mexican hairless dog) as well as the
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239:Clinical Medicine of the Dog and Cat
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386:Susan M. Ewing (4 May 2011).
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27:Skin disease of dogs and cats
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359:Moriello, Karen A. (2011).
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103:American Pit Bull Terrier
362:Small Animal Dermatology
233:Lewis, Diane T. (2016).
129:, Peruvian Inca Orchid (
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420:Dodds, W. Jean (2011).
42:Pyotraumatic dermatitis
444:Dog Hot Spot Treatment
50:acute moist dermatitis
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131:Peruvian Hairless Dog
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127:Pembroke Welsh Corgi
389:Poodles For Dummies
119:Labrador Retriever
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107:Basset Hound
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453:Categories
169:References
123:Leonberger
153:Treatment
135:Shiba Inu
430:March 6,
46:hot spot
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425:(PDF)
99:Akita
73:Cause
64:Signs
432:2020
407:2012
394:ISBN
367:ISBN
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209:ISBN
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