Difference between revisions of "Sarcoptic Mange"
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(Created page with '==Transmission== *Close contact *Adults and larvae can be transferred from one skin surface to another ==Pathogenesis== *Erythema with papule formation *Scale and crust forma…') |
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==Transmission== | ==Transmission== | ||
| + | [[Image:Puppy sarcoptic mange.jpg|thumb|right|150px|Puppy with sarcoptic mange - Wikimedia Commons]] | ||
*Close contact | *Close contact | ||
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| − | + | ==Diagnosis== | |
*Skin scraping until capillary blood appears | *Skin scraping until capillary blood appears | ||
**Adults, eggs, immature mites and faecal pellets can be seen microscopically | **Adults, eggs, immature mites and faecal pellets can be seen microscopically | ||
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| − | + | ==Treatment== | |
*Acaricide | *Acaricide | ||
**For more information on acaricides click [[Ectoparasiticides|here]] | **For more information on acaricides click [[Ectoparasiticides|here]] | ||
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*Selamectin is available as a good spot-on for dogs | *Selamectin is available as a good spot-on for dogs | ||
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| − | '''Dogs | + | '''[[Sarcoptic Mange - Dog|In Dogs]] |
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*Infestation adversely affects productivity | *Infestation adversely affects productivity | ||
| + | *Control for pigs: | ||
| + | **Treat sows before entering the farrowing pen | ||
| + | **Treat boars at 6 month intervals | ||
Revision as of 22:27, 30 March 2010
Transmission
- Close contact
- Adults and larvae can be transferred from one skin surface to another
Pathogenesis
- Erythema with papule formation
- Scale and crust formation
- Alopecia
- Intense pruritus for 1 week
- Self-inflicted trauma
- Scab formation
- Wrinkling and thickening of skin
- Hypersensitivity may develop
- Rash develops
Sarcoptes scabiei
- Causes scabies
- Strains of S. scabiei can be passed between different animals and cause clinical signs although the infection is likely to resolve spontaneously and be unlikely to establish
Diagnosis
- Skin scraping until capillary blood appears
- Adults, eggs, immature mites and faecal pellets can be seen microscopically
- Place material on a microscope slide
- Add 10% KOH
- Warm slide over bunsen flame
Treatment
- Acaricide
- For more information on acaricides click here
- Treat both infected and in-contact animals
- Older products have to be given in repeat treatments
- Avermectins are effective in farm animals
- Selamectin is available as a good spot-on for dogs
Cats
- Rare
Pigs
- Important condition, 35% pigs are asymptomatic carriers
- First signs of infestation appear on the ears before spreading to the rest of the body
- Transmission from sow to piglets whilst suckling and from boars to gilts at service
- Infestation adversely affects productivity
- Control for pigs:
- Treat sows before entering the farrowing pen
- Treat boars at 6 month intervals
Cattle
- Most frequently seen in housed cattle
- Notifiable in USA and Canada
- Often called 'neck and tail mange' as lesions most often seen on neck and tail
- Infestation adversely affects productivity
Sheep
- Notifiable in UK
- Lesions on hairy parts of face
- E.g. Face, ears, axillae and groin
- Causes considerable hide damage in local African breeds of long haired sheep
Horses
- Notifiable in UK
- Lesions begin on head, neck and shoulders then spread to rest of body