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==Introduction==

This is a group of diseases affecting the epidermis caused by  [[Dermatophilus congolensis|''Dermatophilus congolensis'']]. It causes a range of conditions in large animals including rain scald in horses and strawberry foot rot in sheep. The disease is associated with skin trauma, prolonged wetting or [[:Category:Integumentary System - Parasitic Infections| parasites]]. Lesions typically involve exudative dermatitis with scab formation. It is a zoonosis affecting humans in close contact with infected animals.

 

 

==Description==

This is a group of diseases affecting the epidermis caused by  [[Dermatophilus congolensis|''Dermatophilus congolensis'']]. It causes a range of conditions in large animals including rain scald in horses and strawberry foot rot in sheep. The disease is associated with skin trauma, prolonged wetting or [[Parasitic skin infections - Pathology#Parasitic| parasites]]. Lesions typically involve exudative dermatitis with scab formation. It is a zoonosis affecting humans in close contact with infected animals.

==Signalment==

==Signalment==

'''[[Dermatophilosis - Cattle|Bovine dermatophilosis]]

'''[[Dermatophilosis - Cattle|Bovine dermatophilosis]]

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==Diagnosis==

==Diagnosis==

Can often make a diagnosis on history and physical exam. Impression smears can also be useful when stained with either gram stain or Giemsa and examined microscopically.

Diagnosis can often be made on history and physical exam. '''Impression smears''' can also be useful when stained with either gram stain or Giemsa and examined microscopically.

Additionally it is possible to culture material from the crusts however this can be difficult due to the slow growing nature of the pathogen.

==Pathology==

==Pathology==

Grossly: [[Skin Glossary - Pathology|Papules, pustules, crusts]] may coalesce and mat the coat.

Grossly:  

Papules, pustules, crusts may coalesce and mat the coat.

Microscopically:

Microscopically:

**Hyperplastic superficial perivascular dermatitis

*Hyperplastic superficial perivascular dermatitis

**Multilaminated crusts, alternating keratin and inflammatory cell layers

*Multilaminated crusts, alternating keratin and inflammatory cell layers

==Prognosis==

==Prognosis==

Good if animals are kept dry. Often re-occurs in wet weather.

Good if animals are kept dry. Often re-occurs in wet weather.

==References==

==References==

Merck & Co (2008) The Merck Veterinary Manual (Eighth Edition) Merial  

Merck & Co (2008) '''The Merck Veterinary Manual''' (Eighth Edition) ''Merial''

4th year Veterinary Dermatology notes. Royal Veterinary college. October-November 2008. p60-64.

4th year Veterinary Dermatology notes. Royal Veterinary college. October-November 2008. p60-64.

 

 

[[Category:Dermatological Diseases - Pig]][[Category:Dermatological Diseases - Goat]][[Category:Zoonoses]][[Category:Dermatological Diseases - Dog]][[Category:Dermatological Diseases - Cat]]

 

[[Category:Expert Review]]

 

[[Category:Integumentary System - Bacterial Infections]]

 

 

[[Category:Cattle]][[Category:Sheep]][[Category:To_Do_-_Caz]]

[[Category:Sheep]][[Category:Pig]][[Category:Cattle]][[Category:Goat]][[Category:Zoonoses]][[Category:Dog]][[Category:Cat]]

[[Category:To_Do_-_Review]]

[[Category:Dermatological_Disorders_-_Horse]]