Author, Donkey, Bureaucrats, Administrators
53,803
edits
Changes
Jump to navigation
Jump to search
no edit summary
*'''Treatment''':
*'''Treatment''':
**Parenteral antibiotics e.g oxytetracycline, pr penicillin-streptomycin combinations
**Parenteral antibiotics e.g oxytetracycline, pr penicillin-streptomycin combinations
[[Image: Dermatophilosis in cow.jpg|100px|thumb|right|<small><center>Dermatophilosis in a cow (Courtesy of Bristol BioMed Image Archive)</center></small>]]
*Caused by [[Dermatophilus congolensis|''Dermatophilus congolensis'']]
*Affects cattle, horses, sheep mainly
*More common in wet and warm weather
*Transmotted from animal to animal
*Lesions tend to form on dorsal back and extremities
*Associated with skin trauma, prolonged wetting or [[Parasitic skin infections - Pathology#Parasitic| parasites]]
** -> penetration of zoospores
*Bacteria proliferate in outer sheath of hair follicles and superficial epidermis
*Gram-positive, filamentous branching organisms, subdivided longitudinally and transversly
*Causing:
**Acute inflammatory response -> neutrophil migration through dermis and epidermis -> formation of microabscesses
**Further penetration of bacteria is thus prevented
**Regenerated epidermis is invaded again by remaining organisms
**Repeated reinfection -> multilaminated pustular crusts
*Grossly:
**[[Skin Glossary - Pathology|Papules, pustules, crusts]] may coalesce and mat the coat
*Microscopically:
**Hyperplastic superficial perivascular dermatitis
**Multilaminated crusts, alternating keratin and inflammatory cell layers
[[Category:Cattle]][[Category:Sheep]][[Category:Horse]][[Category:To_Do_-_Clinical]]
[[Category:Cattle]][[Category:Sheep]][[Category:Horse]][[Category:To_Do_-_Clinical]]