Trombiculosis in a cat
Lowenstine, L.J.; Carpenter, J.L.; OConnor, B.M.
Journal of the American Veterinary Medical Association 175(3): 289
1979
ISSN/ISBN: 0003-1488 PMID: 500457 Document Number: 143068
Trombiculosis (dermatitis caused by trombiculid mites) in a domestic shorthair cat was characterised by diffuse thickening and crusting of the skin of the abdomen and limbs and by multiple papules on the face, ears, and sides of the trunk. Skin biopsy revealed acanthosis and hyperkeratosis involving the epidermis and hair follicles, mites in epidermal tunnels, and edema of the dermis, with infiltration of eosinophils and mast cells. Mites from skin scrapings were identified as Walchia americana Ewing. This appears to be the first record of a cat being infested with this mite. The cat was treated systemically with a broad-spectrum antibiotic and topically with a powder preparation containing carbaryl and pyrethrin. The lesions were resolved within 2 months.