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==Transmission==
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== Introduction<br> ==
[[Image:Puppy sarcoptic mange.jpg|thumb|right|150px|'''Puppy with sarcoptic mange''' <br> Caroldermoid 2006, Wikimedia Commons]]
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*Close contact
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*Adults and larvae can be transferred from one skin surface to another
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Sarcoptic mange is a relatively common skin disease of dogs and other species, in the UK. It can affect animals of all ages, but may be most severe in puppies. It can also transfer to humans where it cannot burrow, but will cause a pruritic, erythrematous <br>
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==Pathogenesis==
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Transmission of the disease is by direct contact.<br>
*Erythema with papule formation
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*Scale and crust formation
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The mite Sarcoptes scabiei is the causes scabies. Strains of S. scabiei can be passed between different animals and cause clinical signs although the infection is likely to resolve spontaneously and be unlikely to establish. <br>
**Alopecia
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*Intense pruritus for 1 week
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The disease is common in the dog, rare in the cat and quite common in pigs, where the disease is also severe. In cattle, sheep and horses the disease is notifiable and rare.<br>
**Self-inflicted trauma
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**Scab formation
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*Wrinkling and thickening of skin
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<br>
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*[[Hypersensitivity - Introduction|Hypersensitivity]] may develop
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[[Image:Puppy sarcoptic mange.jpg|thumb|right|150px|<b>Puppy with sarcoptic mange</b> <br /> Caroldermoid 2006, Wikimedia Commons]]  
**Rash develops
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== Clinical Signs<br> ==
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''Sarcoptes scabiei''
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The disease is characterised by erythema with papule formation, scale and crust formation, alopecia and intense pruritus for at least one week. This will often appear clincally as self inflicted trauma wounds and scab formation.
*Causes scabies
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*Strains of ''S. scabiei'' can be passed between different animals and cause clinical signs although the infection is likely to resolve spontaneously and be unlikely to establish
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There will be a wrinkling and thickening of skinin the chronic cases too and h[[Hypersensitivity - Introduction|ypersensitivity]] may develop. <br>
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==Diagnosis==
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In the dog, clinical signs are characteristic with the first signs appearing at edges of ears, then progresses to muzzle, face and elbows. It is intensely pruritic.<br>
*Skin scraping until capillary blood appears
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**Adults, eggs, immature mites and faecal pellets can be seen microscopically
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*Place material on a microscope slide
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<br><br>
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*Add 10% KOH
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== Diagnosis ==
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*Warm slide over bunsen flame
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Diagnosis can be made by characteristics of clincal signs. A deep skin scraping should be taken (skin scraping until capillary blood appears) then this be viewed under the microscope for identification of mites. Slides are prepared by placing material on a slide, adding 10% KOH and warming over a bunsen flame.&nbsp; Adults, eggs, immature mites and faecal pellets can be seen microscopically.<br>
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==Treatment==
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*Acaricide
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**For more information on acaricides click [[Ectoparasiticides|here]]
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*Treat both infected and in-contact animals
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*Older products have to be given in repeat treatments
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== Treatment ==
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*Avermectins are effective in farm animals
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An acaricide should be used to treat this infection; For more information on acaricides click [[Ectoparasiticides|here]]<br>
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*Selamectin is available as a good spot-on for dogs
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Both infected and in-contact animals should be treated, older products have to be given in repeat treatments.Avermectins are effective in farm animals and Selamectin is available as a good spot-on for dogs. <br>
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All bedding and materials that have come into contact with the animal, e.g. the car, must be thoroughly cleaned and disifected. <br>
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===Dog===
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*Sarcoptic Mange is highly contagious
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*Intense pruritus
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*First signs appear at edges of ears, then progresses to muzzle, face and elbows
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===Cat===
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== Sarcoptic mange in Pigs<br> ==
*Is rare
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===Pig===
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Sarcoptic Mange is an important condition in pigs where 35%of pigs are asymptomatic carriers of the infection. First signs of infestation appear on the ears before spreading to the rest of the body, which is the same as dogs. Transmission is usually via direct contact from sow to piglets whilst suckling and from boars to gilts at service. <br>
*Sarcoptic Mange is an important condition, 35% pigs are asymptomatic carriers
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*First signs of infestation appear on the ears before spreading to the rest of the body
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Control for pigs includes treating sows before entering the farrowing pen and treating boars at 6 month intervals.<br>
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*Transmission from sow to piglets whilst suckling and from boars to gilts at service
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*Infestation adversely affects productivity
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== References<br> ==
*Control for pigs:
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**Treat sows before entering the farrowing pen
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**Treat boars at 6 month intervals
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===Cattle===
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Foster, A, and Foll, C. (2003) BSAVA small animal dermatology (second edition) British Small Animal Veterinary Association<br>Fox, M and Jacobs, D. (2007) Parasitology Study Guide Part 1: Ectoparasites Royal Veterinary College <br>Taylor, D.J. (2006) Pig Diseases (Eighth edition) St Edmunsdbury Press ltd<br>
*Sarcoptic Mange is most frequently seen in housed cattle
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*'''Notifiable in USA and Canada'''
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<br>
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*Often called 'neck and tail mange' as lesions most often seen on neck and tail
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== Test yourself with the Mites Flashcards ==
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*Infestation adversely affects productivity
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[[Mites Flashcards|Mites Flashcards]]
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===Sheep===
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[[Category:To_Do_-_Review]] [[Category:Dermatological_Diseases_-_Dog]] [[Category:Dermatological_Diseases_-_Cat]] [[Category:Dermatological_Diseases_-_Cattle]] [[Category:Dermatological_Diseases_-_Pig]] [[Category:Dermatological_Diseases_-_Sheep]] [[Category:Dermatological_Diseases_-_Horse]] [[Category:Integumentary_System_-_Mite_Infections]]
*Sarcoptic Mange is '''Notifiable in UK'''
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*Lesions on hairy parts of face
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**E.g. Face, ears, axillae and groin
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*Causes considerable hide damage in local African breeds of long haired sheep
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===Horse===
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*Sarcoptic Mange is '''Notifiable in UK'''
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*Lesions begin on head, neck and shoulders then spread to rest of body
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==Other==
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*Caused by [[Sarcoptes|''Sarcoptes scabiei'']]
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*Highly contagious
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*Mainly in pigs, dogs, also horses, cattle, sheep, goats and cats
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*Intense pruritus due hypersensitivity to mites borrowing through stratum corneum
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*Usually starts with external pinnae -> head -> neck -> generalised
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*Grossly:
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**Erythematous [[Skin Glossary - Pathology|macules, papules, crusts]]
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**If chronic -> [[Skin Glossary - Pathology|lichenified]], hairless
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*Microscopically:
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**Hyperplastic, spongiotic, superficial perivascular dermatitis
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**Crusting, eosinophil infiltration
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**Mites are not commonly seen, but eggs and feces may be found in stratumn corneum
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==Test yourself with the Mites Flashcards==
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[[Mites_Flashcards|Mites Flashcards]]
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[[Category:To_Do_-_Clinical]]
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[[Category:Dermatological Diseases - Dog]]
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[[Category:Dermatological Diseases - Cat]]
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[[Category:Dermatological Diseases - Cattle]]
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[[Category:Dermatological Diseases - Pig]]
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[[Category:Dermatological Diseases - Sheep]]
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[[Category:Dermatological Diseases - Horse]]
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[[Category:Integumentary System - Mite Infections]]
 
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