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→''Demodex''
'''Pathogenesis and Epidemiology'''
'''Pathogenesis and Epidemiology'''
*Initial infection is slight hair loss which may resolve spontaneously or could spread over the body
''Diagnosis'''
*Squamous demodecosis
**Less serious
**Dry reaction
**Alopecia, desquamation and skin thickening
**Absent to mild pruritis
*Follicular/pustular demodecosis
**More serious
**Skin invasion by ''Staphylocci''
**Skin becomes wrinkled, thickened and contains pustules whish ooze serum, blood or pus
**Affected animals may be seriously disfigured
**Severe pruritis is associated with secondary infection
*Immune factors are important in determining the severity and occurence of demodecosis
**Familial susceptibility
**Immunosuppression
**Immunosuppressants
'''Cats'''
*Rare
*Confined to the periocular region
*Mild squamous type only
'''Cattle'''
*Pea-sized nodules in the skin
**Each nodule contains several thousand mites
*Affects hide quality
**Economically important in Australia
'''Goats'''
*Becoming more common in goats
*Disease similar to that in cattle
''Pigs, Sheep and Horses'''
*Rare
'''Diagnosis'''
*Liquid parafin applied to a skin fold
*Liquid parafin applied to a skin fold
*To aid [[Ectoparasiticides|acaricide]] penetration, clipping a dog's coat and washing is recommended
*To aid [[Ectoparasiticides|acaricide]] penetration, clipping a dog's coat and washing is recommended
===''Notoedres''===
===''Notoedres''===