Acarosis y zoonosis relacionadas / Animal mites transmissible to humans and associated zoonosis

Mites that affect animals (acariasis) can occasionally be transmitted to humans by incidental contact producing pruritus and dermatitis. Animals such as dogs, cats, mice, birds and reptiles, harbour several mite species. Hemophage mites and those that feed on lymph have the potential of transmitting important zoonotic agents (cuales??). The presence of lesions of unclear origin and a history of contact with pets or wild animals should alert towards the possibility of acariasis. Diagnosis is based on direct visualization of the mite,analysis of its morphology and obtaining information on the animal host. Awareness of these acarosis and the responsible care of pets and animals are the most relevant preventive measures.

Los ácaros de animales (acariasis) pueden transmitirse en forma accidental al hombre al estar en contacto con ellos, produciendo lesiones características (pápulas o vesículas) y ocasionando una dermatitis pruriginosa (acarosis). Existen diversas especies de ácaros, que se encuentran en perros, gatos, roedores, aves y reptiles. Los ácaros hematófagos o los que se alimentan de linfa tienen el potencial de transmitir importantes agentes zoonóticos. La presencia de lesiones sin una etiología clara y el antecedente de contacto con animales, tanto mascotas como animales silvestres, ayudan a plantear esta etiología. El diagnóstico se realiza con la visualización del acaro, morfología y tipo de hospedero animal. El conocimiento de estas acarosis y el control responsable de mascotas y animales, son las principales medidas de prevención.

A Case of Rat Mite Dermatitis / 대한피부과학회지

Rat mite dermatitis caused by Ornithonysus bacoti, commonly referred to as the tropical rat mite, is characterized by pruritic papules in patients exposed to tropical rat mite. Histopathologic sections from the lesions of infected patients show moderate perivascular lymphohistiocytic infiltration intermingled with some eosinophils. Causative female mites, Ornithonyssus bacoti, can be collected from around the skin lesions. The conclusive diagnosis of tropical rat mite dermatitis is based on the identification of the arthropod O. bacoti at the home of the patient (husbandry of gerbils, etc.). Moreover, the diagnosis of rat mite dermatitis requires the detection of the parasite, which is more likely to be found in the host's environment rather than on the host's skin. We report a case of rat mite dermatitis in a 22-year-old female who presented with pruritic, multiple, erythematous papules on the abdomen, back and axilla.