ABSTRACT
Nós descrevemos um homem de 48 anos que procurou nossa clínica com múltiplas pápulas eritematosas e pruriginosas dois dias após uma viagem à Serra da Mantiqueira. O exame físico meticuloso com o dermatoscópio de epiluminescência demonstrou múltiplos carrapatos na fase de larva na pele.
We describe the case of a 48-year-old healthy man who sought for medical help in our clinic with multiple pruriginous erythematous papules after a 2-day trip to "Serra da Mantiqueira". (Mantiqueira Mountain). A meticulous physical exam with a portable epiluminescence microscopy showed several ticks on a larval form on the skin of the patient.
Subject(s)
Humans , Male , Middle Aged , Dermoscopy , Tick Infestations/pathology , Dermoscopy/methodsABSTRACT
Besides of transmitting several diseases to animals, and tick paralysis, Ornithodoros lahorensis induce skin lesions. This experiment was done to determine histopathological features of adult O. lahorensis bite on rat. In this investigation adult male rats were infested with O. lahorensis ticks. Animals were divided into two groups and euthanized two days and two weeks after infestation. The skin samples were fixed in 10% buffer formal saline and processed and sections were stained with hematoxylin and eosin. The lesions reflected the clinical and gross findings, with hyperemia, edema and vacuolation in the early stages, cellular infiltrations, principally lymphocyte accompanied vascular changes. Newly formed fibrous tissue with large number of hyperemic capillaries and active inflammatory process in which lymphocytes and eosinophils were the predominant cells, were seen after two weeks. Foci of necrosis in the epithelium with remnant of infiltration of polymorphonucular cells with sever hemorrhages were also evident. Vascular changes included prevascular infiltration of lymphocyte and fibrinoied ne'crosis on the vessel walls. This study well documented the different pathological changes of skin of rats with O. lahorensis