Cheyletiella Dermatitis

Abstract

A mild dermatitis probably due to Cheyletiella yasguri was observed in 2 persons whose pet dog was infested with this parasite. Cheyletiella mites differ morphologically from sarcoptic mites, which cause canine and human scabies. Treatment of man and dog with 1% gamma benzene hexachloride is usually successful in clearing this condition.

Dermatitis caused by arthropods in domestic environment: an Italian multicentre study

“…Other clinical features frequently reported are erythematous and excoriated papules, urticaria‐ and scabies‐like lesions, erythematous papules and pustules . Rarely varicella‐like, with large central vesicles or pustules, and erythema multiforme‐like eruptions are described . Regardless of their clinical appearance, skin lesions can be scattered or widespread, with a tendency to cluster in circumscribed areas or in linear arrangements.…”

“…5,6 Rarely varicella-like, with large central vesicles or pustules, and erythema multiforme-like eruptions are described. 16 Regardless of their clinical appearance, skin lesions can be scattered or widespread, with a tendency to cluster in circumscribed areas or in linear arrangements. The lesions generally persist for 2-10 days are usually itchy and painless 17 and may result in temporary hyperpigmentation once they resolve; sequelae with necrotic, ecchymotic and hyperpigmented aspects are rare.…”

Skin Infections

“…949,950 Below this massive scale, there is usually a psoriasiform hyperplasia with spongiosis and exocytosis of neutrophils and eosinophils; microabscess formation may occur. [961][962][963][964] These mites are nonburrowing and have a "bite and run" behavior. 950 Cheyletiella Dermatitis A common cause of the so-called walking dandruff of dogs, rabbits, and cats, Cheyletiella spp.…”

“…can also cause intensely pruritic dermatitis in humans. 963 There is usually a superficial dermal and mid-dermal lymphoeosinophilic infiltrate with some histiocytes. [961][962][963][964] These mites are nonburrowing and have a "bite and run" behavior.…”