Trombiculiasis is an epizoonosis that occurs worldwide and is caused by various types of chiggers. Clinical findings after accidental contact with the parasitic mite larvae include erythematous papules and urticarial plaques, to some extent with vesicular transformation, which can lead to excoriations due to the intense pruritus. Prophylaxis against exposure is recommended when visiting areas known to be colonized by mites. Reactions to bites can be treated by local application of alcohol compresses or zinc lotions and external application of agents containing polidocanol or glucocorticosteroid. Systemic antihistamines are indicated to control itching.
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A review on trombiculiasis: An underreported parasitosis that affects humans and animals, including world distribution, clinical findings, associated pathogens, prophylaxis and identification methods.
Acta Trop
December 2024
Departamento de Biologia Animal, Instituto de Biologia, Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil. Electronic address:
Chigger mites comprise three families: Trombiculidae, Leeuwenhoekiidae and Walchiidae, with over 3,000 species worldwide. Their life cycle includes six stages, and the larvae are parasites, while the other stages are free-living predators. Once attached to a host, the larvae spend several days feeding on the host's epithelial tissue, forming the stylostome.
View Article and Find Full Text PDFEutrombicula cochinocaensis infestation in llamas (Lama glama) in the Puna region of Argentina.
Vet Res Commun
June 2024
Facultad de Ciencias Agrarias y Veterinarias-UCASAL, Salta, Argentina.
This paper aims to describe a case of trombiculosis in llamas from the Puna region of Argentina caused by Eutrombicula cochinocaensis. Trombiculosis is a parasitic infestation caused by the larval form of trombiculid mites, commonly known as chigger mites. Six adult llamas out of eighteen (33%) were infested and showed dermatitis, hyperemia, and crusts together with an orange-dotted pattern.
View Article and Find Full Text PDFChigger mite (Acariformes: Trombiculidae) infestation in reed passerine birds in Central Europe: a case of the bearded tit .
Parasitology
February 2023
Department of Invertebrate Systematics and Ecology, Wroclaw University of Environmental and Life Sciences, Kożuchowska 5b, Wroclaw 51-631, Poland.
Larval trombiculid (chigger) mites are common ectoparasites of terrestrial vertebrates including humans, causing itching and skin inflammation known as trombiculiasis. Investigation of their diversity, distribution and seasonal abundance is therefore important from a veterinary and public health point of view. Although researchers have paid increased attention to these parasites in recent years, there is still little ecological data available on chiggers associated with birds inhabiting different types of habitats such as wetlands, for example.
View Article and Find Full Text PDFNovel Vector of Scrub Typhus in Sub-Antarctic Chile: Evidence From Human Exposure.
Clin Infect Dis
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Facultad de Ciencias Veterinarias, Universidad Austral, Valdivia, Chile.
The exposure of a research team to chigger mites in southern Chile allowed the first identification of a trombiculid species as vector and reservoir of scrub typhus outside the tsutsugamushi triangle, providing unique insights into the ecology and transmission of this recently discovered rickettsial infection in South America.
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