Difference between revisions of "Viral skin infections - Pathology"

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**[[Skin Glossary - Pathology|Macule]] -> [[Skin Glossary - Pathology|papule]] -> [[Skin Glossary - Pathology|vesicle]] -> umbilicated [[Skin Glossary - Pathology|pustule]] -> [[Skin Glossary - Pathology|crust]] -> [[Skin Glossary - Pathology|scar]]
 
**[[Skin Glossary - Pathology|Macule]] -> [[Skin Glossary - Pathology|papule]] -> [[Skin Glossary - Pathology|vesicle]] -> umbilicated [[Skin Glossary - Pathology|pustule]] -> [[Skin Glossary - Pathology|crust]] -> [[Skin Glossary - Pathology|scar]]
  
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====Contagious ecthyma====
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[[Orf]]
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[[Image: Contagious ecthyma.jpg|100px|thumb|right|<small><center>Contagious ecthyma (Courtesy of Bristol BioMed Image Archive)</center></small>]]
 
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*Also called '''contagious pustular dermatitis, orf, sore mouth'''
 
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*Caused by a [[Poxviridae|parapox virus]]
 
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*Affects mainly young sheep, less commonly cattle, humans, dogs
 
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*Starts in abrasions around mouth commisures and spreads to [[Lips - Anatomy & Physiology|lips]], oral mucosa, eyelids and feet
 
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*May also transfer to teats of the mother of an affected lamb
 
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*Lesions typical of poxvirus but very brief vesicle stage
 
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*Most obvious is the proliferative pustular stage
 
  
 
===Other viruses===
 
===Other viruses===

Revision as of 11:01, 30 June 2010

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()Map INTEGUMENTARY SYSTEM (Map)
SKIN INFECTIOUS



Herpesviruses

Herpesvirus Skin Infections


Poxviruses

  • Lesion development:
    • Due to viral invasion of epithelium
    • Vascular injury -> ischaemic necrosis
    • Stimulation of host DNA -> hyperplastic nodules
  • Cutaneous lesions:

Orf

Other viruses

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