Difference between revisions of "Dermatophilosis - Horse"

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(Created page with '{{review}} Also see <big>'''General Dermatophilosis'''</big> ==Clinical Signs== Three clinical syndromes have been documented: *Rain scald *Mud fever *Gr…')
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Also known as: '''''Cutaneous streptothrichosis — Rain Scald — Mud Fever
 
  
Also see <big>'''[[Dermatophilosis|General Dermatophilosis]]'''</big> for more information.
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Also see <big>'''[[Dermatophilosis|General Dermatophilosis]]'''</big>
  
 
==Clinical Signs==
 
==Clinical Signs==
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*Rain scald  
 
*Rain scald  
 
*Mud fever
 
*Mud fever
*[[Greasy Heel]]
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*Grease heel
 
 
They occur usually due to a repeated wetting of the stratum corneum or skin trauma which makes the skin more vulnerable to parasitism by the causal agent ''Dermatophilus congolensis''.  It is more commonly seen in the winter. Typically  hair becomes matted and focal lesions develop into crusts and thick scabs covered by layers of yellow-green pus. When scabs are removed the hair is taken with them and alopecia results.
 
 
 
'''Rain scald''' commonly affects the dorsum, shoulders and neck. It can however extend to lower portions of the body and abdomen. It typically begins as small rough raised bumps and can go un-noticed in long haired regions.
 
 
 
'''Mud fever''' looks similar to rain scald but affects the pastern and distal limbs. White legs and white skinned areas are most commonly affected.
 
  
'''Grease heel''' is a disease complex described in its own page. ''Dermatophilus'' is not always involved.
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Typically  hair becomes matted and focal lesions develop into crusts and thick scabs covered by layers of yellow-green pus. When scabs are removed the hair is taken with them and alopecia results. Rain scald commonly affects the dorsum, shoulders and neck. It can however extend to lower portions of the body and abdomen. It typically begins as small rough raised bumps and can go un-noticed in long haired regions. Mud fever looks similar to rain scald but affects the pastern and distal limbs. White legs and white skinned areas are most commonly affected. Grease heel is a disease complex which presens in the same way as rain scald and mud fever but over the heels. It produces a grey exudate which feels greasy to touch. The disease complex can involve dematophilosis as well as a number of other conditions including [[Dermatophytosis| dermatophytosis]], pastern folliculitis, [[Bacterial skin infections - Pathology#superficial pyoderma|pyoderma]], [[Photosensitisation|photosensitisation]], contact dermatitis and [[Chorioptic Mange|chorioptic mange]].  
  
 
==Treatment==
 
==Treatment==
 
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Horses:
 
Bring affected animals into a dry environment and isolate. Scabs should be soaked and removed. Chlorhexidine and benzoyl peroxide are recommended as topical antibacterials.
 
Bring affected animals into a dry environment and isolate. Scabs should be soaked and removed. Chlorhexidine and benzoyl peroxide are recommended as topical antibacterials.
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Tack and any other equipment should be disinfected to avoid further infection. Systemic [[Antibiotics| antibiotics]] should be administered if secondary infection is present. Owners should be educated about the condition and warned that reoccurence may occur in wet weather. 
  
Tack and any other equipment should be disinfected to avoid further infection. Systemic [[Antibiotics| antibiotics]] should be administered if secondary infection is present. Owners should be educated about the condition and warned that the disease may reoccur in wet weather. 
 
 
{{Learning
 
|literature search = [http://www.cabdirect.org/search.html?rowId=1&options1=AND&q1=dermatophilosis&occuring1=title&rowId=2&options2=AND&q2=horses&occuring2=od&rowId=3&options3=AND&q3=&occuring3=freetext&x=57&y=12&publishedstart=yyyy&publishedend=yyyy&calendarInput=yyyy-mm-dd&la=any&it=any&show=all Equine dermatophilosis]
 
}}
 
 
==References==
 
Merck & Co (2008) '''The Merck Veterinary Manual''' (Eighth Edition) ''Merial''
 
 
4th year Veterinary Dermatology notes. Royal Veterinary college. October-November 2008. p60-64.
 
 
 
{{review}}
 
  
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[[Category:Dermatological_Disorders_-_Horse]][[Category:To_Do_-_Caz]][[Category:Expert_Review]]
[[Category:Dermatological Diseases - Horse]]]][[Category:Expert_Review]]
 

Revision as of 13:57, 28 July 2010


Also see General Dermatophilosis

Clinical Signs

Three clinical syndromes have been documented:

  • Rain scald
  • Mud fever
  • Grease heel

Typically hair becomes matted and focal lesions develop into crusts and thick scabs covered by layers of yellow-green pus. When scabs are removed the hair is taken with them and alopecia results. Rain scald commonly affects the dorsum, shoulders and neck. It can however extend to lower portions of the body and abdomen. It typically begins as small rough raised bumps and can go un-noticed in long haired regions. Mud fever looks similar to rain scald but affects the pastern and distal limbs. White legs and white skinned areas are most commonly affected. Grease heel is a disease complex which presens in the same way as rain scald and mud fever but over the heels. It produces a grey exudate which feels greasy to touch. The disease complex can involve dematophilosis as well as a number of other conditions including dermatophytosis, pastern folliculitis, pyoderma, photosensitisation, contact dermatitis and chorioptic mange.

Treatment

Horses: Bring affected animals into a dry environment and isolate. Scabs should be soaked and removed. Chlorhexidine and benzoyl peroxide are recommended as topical antibacterials. Tack and any other equipment should be disinfected to avoid further infection. Systemic antibiotics should be administered if secondary infection is present. Owners should be educated about the condition and warned that reoccurence may occur in wet weather.