79 bytes added ,  10:45, 29 February 2008
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*Dormant zoospores become activated when moisture and temperature levels favourable
 
*Dormant zoospores become activated when moisture and temperature levels favourable
 
*Zoospores may survive 3 years in scabs
 
*Zoospores may survive 3 years in scabs
*Pathogenicity:
+
*'''Pathogenicity''':
 
**Does not usually invade healthy skin
 
**Does not usually invade healthy skin
 
**Entrance after trauma or persistent wetting
 
**Entrance after trauma or persistent wetting
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**Microabscesses are formed in the skin
 
**Microabscesses are formed in the skin
 
**Raised crusts develop in the affected regions
 
**Raised crusts develop in the affected regions
*Diagnosis:
+
*[[Skin - infectious#Dermatophilosis|'''Pathology''']]
 +
*'''Diagnosis''':
 
**Giemsa-stained smears from scabs reveal branching filaments containing zoospores
 
**Giemsa-stained smears from scabs reveal branching filaments containing zoospores
 
**Immunofluorescence
 
**Immunofluorescence
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**After incubation, colonies are yellow and haemolytic (after 48 hours); they later become rough and yellow, and gain a mucoid appearance
 
**After incubation, colonies are yellow and haemolytic (after 48 hours); they later become rough and yellow, and gain a mucoid appearance
 
**No growth on Sabouraud dectrose agar
 
**No growth on Sabouraud dectrose agar
*Clinical infections:
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*'''Clinical infections''':
 
**Infection usually confined to epidermis
 
**Infection usually confined to epidermis
 
**Dermatophilosis
 
**Dermatophilosis
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**Scab formation more prominent in sheep and cattle than in horses
 
**Scab formation more prominent in sheep and cattle than in horses
 
**Lesions may resolve within weeks if dry weather, or may progress
 
**Lesions may resolve within weeks if dry weather, or may progress
*Treatment:
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*'''Treatment''':
 
**Parenteral antibiotics e.g oxytetracycline, pr penicillin-streptomycin combinations
 
**Parenteral antibiotics e.g oxytetracycline, pr penicillin-streptomycin combinations
  
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