Cheyletiella: Difference between revisions
From IDWiki
Cheyletiella
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== Background == |
== Background == |
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+ | * Genus of mite |
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− | * Mites |
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+ | |||
+ | === Epidemiology === |
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* Live on dogs, cats, and rabbits, but can incidentally infect humans |
* Live on dogs, cats, and rabbits, but can incidentally infect humans |
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− | ** On animals, usually on the backs and can cause dandruff-like scales ("walking dermatitis" or dorsal seborrhea sicca) |
+ | ** On animals, usually on the backs and can cause dandruff-like scales ("walking dermatitis", "walking dandruff", or dorsal seborrhea sicca) |
+ | * Human are an incidental host |
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⚫ | |||
+ | * Life cycle completed within 21 days on one host |
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+ | * Adult females can survive off of hose for up to 10 days |
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+ | * Eggs can be shed with animal's hair, creating an environmental reservoir for reinfestation |
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+ | |||
+ | == Clinical Manifestations == |
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* Can be asymptomatic |
* Can be asymptomatic |
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+ | ** Source animal may be asymptomatic |
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⚫ | |||
* Multiple erythematous pruritic papules on arms, trunk, and buttocks |
* Multiple erythematous pruritic papules on arms, trunk, and buttocks |
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− | * May have area of central necrosis |
+ | ** May have area of central necrosis |
+ | ** May develop papulovesicles, urticarial weals, vesicobullous eruptions, or excoriated erosions |
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+ | ** Distribution is essentially the areas of the body that most commonly contact the pet |
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* Presents similar to scabies, but recurs despite treatment |
* Presents similar to scabies, but recurs despite treatment |
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⚫ | |||
+ | == Diagnosis == |
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− | {{DISPLAYTITLE:''Cheyletiella''}} |
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⚫ | |||
+ | * Mites are not usually seen on human hosts (they "bite and run" back to their animal host) |
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+ | |||
+ | == Management == |
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+ | |||
+ | * Mainstay of treatment is to treat the pet, since the human is an incidental host |
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+ | ** Treatments include mite-icidal shampoos, such as ivermectin, phoxim, and moxidectin |
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+ | ** May need multiple treatments |
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+ | * Lesions in pet owner typically resolve within 3 weeks{{DISPLAYTITLE:''Cheyletiella''}} |
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[[Category:Ectoparasites]] |
[[Category:Ectoparasites]] |
Latest revision as of 11:05, 17 April 2023
Background
- Genus of mite
Epidemiology
- Live on dogs, cats, and rabbits, but can incidentally infect humans
- On animals, usually on the backs and can cause dandruff-like scales ("walking dermatitis", "walking dandruff", or dorsal seborrhea sicca)
- Human are an incidental host
- Life cycle completed within 21 days on one host
- Adult females can survive off of hose for up to 10 days
- Eggs can be shed with animal's hair, creating an environmental reservoir for reinfestation
Clinical Manifestations
- Can be asymptomatic
- Source animal may be asymptomatic
- Causes cheyletiellosis, or Cheylatiella dermatitis
- Multiple erythematous pruritic papules on arms, trunk, and buttocks
- May have area of central necrosis
- May develop papulovesicles, urticarial weals, vesicobullous eruptions, or excoriated erosions
- Distribution is essentially the areas of the body that most commonly contact the pet
- Presents similar to scabies, but recurs despite treatment
Diagnosis
- Diagnosis made based on diagnosis of pet (dorsal seborrhea sicca) using skin scrapings or acetate tape impressions that demonstrated mites or eggs
- Mites are not usually seen on human hosts (they "bite and run" back to their animal host)
Management
- Mainstay of treatment is to treat the pet, since the human is an incidental host
- Treatments include mite-icidal shampoos, such as ivermectin, phoxim, and moxidectin
- May need multiple treatments
- Lesions in pet owner typically resolve within 3 weeks