ABSTRACT
@#A 40-year old male, Filipino, farmer, from Bakun, Benguet, presented with a 9 months history of itchiness of right ear. He reported that he was able to collect 4-5 insects every time he cleans his ear. Consult was done with an Ears, Nose and Throat specialist and video-otoscopic examination revealed multi pie animate foreign body (mites) at different stages of development. The patient underwent 5 sessions of ear flushing with warm water at intervals of 2 weeks for 3 months. Collected insects were referred to an entomologist and were identified as Suadasia pontifica Oudemans, belonging to family: Acaridae. Follow up consult after 5 sessions of ear flushing revealed complete removal of mite infestation of his right ear. Patient was instructed to do ear flushing twice daily using warm water mixed with 70% isopropyl alcohol to eradicate any eggs left behind. No other medications were given. Based on Philippine Journal of Otolaryngology - Head and Neck Surgery, Health Research and Development Information Network, and Cochrane Database of Systematic Reviews, this is the first reported case of human otoacariasis in the Philippines.
Subject(s)
Mites , AcariABSTRACT
Resumen Otodectes cynotis es uno de los ácaros responsables de causar dermatosis parasitaria en el pabellón auricular en animales de compañía, lo que les produce prurito intenso e incluso complicaciones óticas por falta del tratamiento adecuado. Su prevalencia en felinos domésticos puede llegar al 37 y el 85 % de los casos de otitis externa. Son variados los productos que pueden utilizarse para el tratamiento de este ácaro, aunque algunos no declaran en su etiquetado su uso en determinadas especies. Por otra parte, los datos disponibles sobre la eficacia comparada de los diversos fármacos utilizados son escasos. Los fármacos más utilizados son selamectina, fipronil, tiabendazol, ivermectina, entre otros. El objetivo de este estudio fue comparar la eficacia acaricida de tres fármacos utilizados en el tratamiento de otoacariasis por Otodectes cynotis, empleando ivermectina 1 %, fipronil 10 % y selamectina 6 % en gatos domésticos de Puerto Montt. Se revisaron 117 gatos domésticos, de los cuales 60 presentaron otocariasis positiva a Otodectes cynotis. Estos 60 pacientes fueron distribuidos en cuatro grupos de 15 individuos cada uno: grupo A, tratados con ivermectina al 1 %, vía ótica; grupo B, tratados con fipronil al 10 %, vía ótica; grupo C, tratados con selamectina al 6 %, vía tópica (spot-on), y grupo D o grupo control, al que se le aplicó un placebo de glicerina, vía ótica. Se realizaron controles a los 7, 14, 21 y 28 días posteriores a la administración del fármaco. El análisis estadístico demostró leves diferencias significativas entre los grupos A, B y C, con el grupo D. Estos resultados sugieren que los tratamientos para la otocariasis provocada por Otodectes cynotis, con ivermectina, fipronil y selamectina en las concentraciones, dosis y vías de administración anteriormente mencionadas, presentan la misma eficacia, pero con diferencias en el valor por tratamiento.
Abstract Otodectes cynotis is one the mite causing parasitic dermatosis in the ear pinna of pets. It produces an intense itching and even some ear complications in the absence of an adequate treatment. The prevalence in domestic cats may reach to 37% and accounts for 85 % of the external otitis cases. Products for treating this mite problem are assorted, even though some of them do not state in the labels whether they are intended to any specific species. On the other hand, there is scarce data available on the compared efficacy of the different drugs used for treatment. Mostly used drugs include selamectin, fipronil, thiabendazole, ivermectin, among others. This study aims to compare the anti-mite efficacy of three drugs in the treatment of otoacariasis caused by Otodectes cynotis, administering ivermectin 1%, fipronil 10%, and selamectin 6% to domestic cats in Puerto Montt. One hundred and seventeen domestic cats were examined and 60 were positive to otoacariasis caused by Otodectes cynotis. These 60 patients were divided into four groups with 15 subjects each: group A, ivermectin 1%, ear drops; group B, fipronil 10%, ear drops; group C, selamectin 6%, topical (spot-on); and group D or control group that received a glycerin placebo as ear drops. Checkups were carried out on days 7, 14, 21 and 28 after applying the drugs. The statistical analysis showed significant mild differences between A, B and C groups and the D group. These results suggest that the treatments with ivermectin, fipronil and selamectin in the concentrations, dosages and administration routes indicated above to solve the otoacariasis caused by Otodectes cynotis are equally efficacious, but show some differences in the specific value of each treatment.
ABSTRACT
ABSTRACT INTRODUCTION: Otoacariasis, the attachment of ticks and mites within the ear canal is a common phenomenon especially in rural areas. OBJECTIVE: To determine the clinical and demographic features of cases with detected ticks in the ear canal, which is a common health problem, and identify tick species. METHODS: Data of patients who had otoacariasis were collected. We also investigated all ticks at the Veterinary Department of Kafkas University. RESULTS: We present the data of patients with otoacariasis. All ticks were identified as otobius. Otobius ticks were found not related with any complications. CONCLUSION: It is very important to detect ticks in the ear canal as they act as vector of some diseases. Identifying species of ticks may help clinicians to prevent further complications associated with vector-borne diseases.
Resumo Introdução: A otoacaríase, fixação de carrapatos duros e moles no interior do conduto auditivo, é fenômeno comum, especialmente em áreas rurais. Objetivo: Determinar as características clínicas e demográficas de casos de carrapatos detectados no conduto auditivo externo, um problema de saúde frequente, e identificar as espécies do ácaro. Método: Coletaram-se dados dos pacientes com otoacaríase, e todos os carrapatos foram investigados no Departamento de Veterinária da Universidade Kafkas. Resultados: Os dados de pacientes com otoacaríase são apresentados. Todos os carrapatos foram identificados como pertencentes ao gênero Otobius e constatou-se não haver relação entre os carrapatos e qualquer tipo de complicação. Conclusão: É muito importante detectar carrapatos no conduto auditivo externo, pois esses ácaros funcionam como vetores para algumas doenças. A identificação da espécie do ácaro pode ajudar o clínico a prevenir complicações associadas às doenças transmitidas por esse vetor.