Cheyletiella: Difference between revisions

Latest revision as of 15:05, 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

@@ Line 1: / Line 1: @@
 == Background ==
+* Genus of mite
-* Mites
+=== 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" 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
-* Causes cheyletiellosis, or ''Cheylatiella'' dermatitis
+* 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 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 made based on diagnosis of pet (dorsal seborrhea sicca)
+== Diagnosis ==
-{{DISPLAYTITLE:''Cheyletiella'' species}}
+* 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{{DISPLAYTITLE:''Cheyletiella''}}
 [[Category:Ectoparasites]]