Necrotic skin lesion in a dog attributed to Loxosceles (brown spider) bite: a case report

Abstract

ABSTRACT:Envenomations caused by Loxosceles (brown spider) have been reported throughout the world. Clinical signs associated to bites of these spiders involve dermonecrotic lesions and intense local inflammatory response, besides systemic manifestations such as intravascular hemolysis, thrombocytopenia, disseminated intravascular coagulation and acute renal failure. The present study aimed to report and to describe dermonecrotic lesions probably caused by a Loxosceles envenomation in a four year-old poodle female dog, treated at the Dermatology Service of the Veterinary Hospital of the Veterinary Medicine and Animal Husbandry School, São Paulo State University, Botucatu, Brazil. Initially, the animal presented two skin lesions with blackish aspect that evolved into ulcerative crusts. The owner reported the presence of a brown spider near the place where the animal spent most of the time. Histological examination of lesions revealed necrosis of the epidermis extending to adnexa and panniculi, which is compatible with Loxosceles bite reaction. The animal was treated with systemic antibiotic and local curatives. Lesions healed by second intention in two months.

Uso de acupuntura, moxabustão, açúcar e rifamicina em ferida aberta de cão: Relato de caso

“…Como é função do rim controlar a água e houve, consumo de Yuan Qi, esse órgão torna-se fraco energeticamente, exigindo mais do baço e pâncreas, que, por sua vez, controla os músculos e o Jin Ye, para sustentá-lo, causando também sua fraqueza. Isso faz Os acupontos escolhidos pelos presentes autores, VG4, B23, B52 E VB25, tonificam o Yin e Yang geral e principalmente do rim, harmonizam a via das águas, aumentam a energia essencial e a essência (Jing) e tonifica o Qi do rim (Limehouse & Taylor-Lemehouse, 2006;Lobo Júnior, 2012). Já o ponto R1 tonifica o rim e o Jing, estabiliza o rim, refresca o calor do sangue, faz limpeza do calor tóxico e do fogo (Xie & Preast, 2012, Deadman et al (2001).…”

“…O VG20, é um ponto de intersecção com o meridiano da bexiga e, além de outras funções, regula e harmoniza o Yang Qi do corpo, relaxa os músculos e tendões. O acuponto BP6 é o encontro de três Yin da perna, harmonizando, fortalecendo e tonificando o Qi do baço e pâncreas, também tonifica o Qi do Rim e o Jing, faz a circulação e tonifica o Qi e Xue, além de harmonizar a via das águas (Lobo Júnior, 2012).…”

“…Os acupontos utilizados no tratamento condizem com a sua função energética, com a forma de tratamento descrita por Xie & Preast (2012) e são descritos em tratamentos de Calor Tóxico também por Limehouse & Taylor-Lemehouse (2006), Lobo Júnior (2012), Xie & Preast (2012) e Wu et al (2013). Os acupontos Ba Feng, que foram utilizados no pé direito, exteriorizam as energias perversas, dispersam o Vento e o Vento-Calor perversos, leva a energia e a faz circular no membro (Limehouse & Taylor-Lemehouse, 2006;Lobo Júnior, 2012), promovendo a volta da propriocepção no cão atendido no hospital da Fait em 3 sessões, enquanto em um relato de caso, o paciente recuperou a propriocepção em 6 semanas, segundo (Deadman et al, 2001;Dimitrova, 2017).…”

Accidents Caused by Spider Bites

“…are slow and progressive, and involve: pain, edema, erythema, blister at the site of the bite, ecchymosis, rashes, burning, focal hemorrhagic lesions mixed with pale areas of ischemia and skin necrosis [15]. A report of loxocelism in a female dog made by Machado et al [6] mentioned the manifestation of necrotic lesions with exudate and purulent hemorrhagic crusts, rashes and painful sensitivity observed after the lesions appeared, subcutaneous presence of bacteria, anemia and neutrophilic leukocytosis with left shift. Urine and serum biochemical exams presented results within normal ranges.…”

“…The incidence of arachnidism is considered nonexistent in large animals, as their thick skin cannot be pierced, rare in cats and common in dogs, particularly due to their exploratory and curious habit, and the habitats of venomous animals, such as the arachnids, located close to urban areas [5]. Despite the occurrence of accidents with dogs, it is not common to find cases reporting spider bites in animals [6].…”