Effectiveness of transdermal fluralaner in the treatment of Lynxacarus radovskyi (Acari: Listrophoridae) in naturally infested domestic cats.

Mites of the species Lynxacarus radovskyi, which are commonly found on domestic cats in Brazil, can cause discomfort, itching, and alopecia. The development of new, safer and more effective treatments with a broad spectrum of activity, including the use of isoxazolines, is needed. The purpose of this study was to assess the efficacy of transdermal fluralaner in domestic cats naturally infested with L. radovskyi. Twenty cats were evaluated by trichograms and divided into two groups of 10 animals. The control group was not treated, while the treated group was given a single topical dose of fluralaner, as per the manufacturer's instructions. The cats were reassessed for the presence of L. radovskyi eggs and mites on days D+7, D+14, D+28, D+42, D+56, D+70, D+84, and D+98. As of D+42, all the animals (100%) tested negative for mites, and remained parasite-free until the end of the study, while the control group tested positive throughout the experiment. It can be concluded that a single dose of fluralaner applied topically was effective in treating cats naturally infested with L. radovskyi.

Furuncular myiasis caused by Dermatobia hominis in a domestic cat - case report.

Dermatobiosis is defined as a parasitosis caused by the larval stage of the human botfly Dermatobia hominis, often observed in large animals but considered unusual in pet animals. The aim of the report is to describe a naturally infested cat treated in a reference dermatology service with clinical presentation similar to neoplasia or abscess. A six-year-old spayed male Brazilian Shorthair cat with outdoor access, from the countryside of Rio de Janeiro state, was treated for two nodules, one located in the sacral region and one in the tail. The patient was restrained, and digital compression of the lesions resulted in expulsion of D. hominis larvae, accompanied by a purulent secretion. The removal of larvae and use of antiseptic at the site resolved the furuncular myiasis. It is possible to assume that the parasitism reported here resulted from the animal's living arrangement, in a rural area with cattle parasitized by D. hominis. We conclude that parasitism by D. hominis should be present on the list of differential diagnoses of cats with nodules and that mechanical removal associated with the use of antiseptics is resolutive.

A dermatobiose é definida como uma parasitose causada pelo estágio larval da mosca humana Dermatobia hominis, frequentemente observada em animais de grande porte, mas considerada incomum em animais de companhia. O objetivo do relato é descrever um gato naturalmente infestado atendido em um serviço de referência em dermatologia com quadro clínico semelhante a neoplasia ou abscesso. Um gato brasileiro de pelo curto, macho, castrado, de seis anos, com acesso ao ar livre, procedente do interior do estado do Rio de Janeiro, foi tratado de dois nódulos, um localizado na região sacral e outro na cauda. O paciente foi contido e a compressão digital das lesões resultou na expulsão das larvas de D. hominis, acompanhada de secreção purulenta. A retirada das larvas e o uso de antisséptico no local resolveram a miíase furuncular. É possível supor que o parasitismo aqui relatado resultou do arranjo de vida do animal, em área rural com gado parasitado por D. hominis. Concluímos que o parasitismo por D. hominis deve estar presente na lista de diagnósticos diferenciais de gatos com nódulos e que a remoção mecânica associada ao uso de antissépticos é resolutiva.