The inoculation eschar of Rickettsia parkeri rickettsiosis in Brazil: Importance and cautions.
Ticks Tick Borne Dis
; 14(2): 102127, 2023 03.
Article
em En
| MEDLINE
| ID: mdl-36693294
ABSTRACT
Two well characterized tick-borne rickettsioses occur in Brazil. Rickettsia rickettsii caused spotted-fever, transmitted by Amblyomma sculptum and Amblyomma aureolatum, is a severe disease with a high case-fatality rate in the southeastern region of the country. Rickettsia parkeri strain Atlantic rainforest infections transmitted by adult Amblyomma ovale ticks cause a milder non-lethal febrile disease with an eschar (necrosis) at the tick bite site. Clinical diagnosis of rickettsiosis is challenging, particularly during the early stages of the illness when signs and symptoms are non-specific. Since eschar at the tick bite site has emerged as the main clinical feature of mild R. parkeri infections and used to differentiate it from severe R. rickettsii infection, its proper recognition, distinction from other tick bite lesions, and boundaries as a clinical tool must be highlighted. Of importance, eschars induced by Rickettsia must be differentiated from dermatoses caused by other tick-borne skin infections as well from lesions caused by the tick bite itself. We herein highlight information on eschar in rickettsial diseases in Brazil and discuss the need for further research on its clinical relevance and application in the diagnosis of spotted fever caused by R. parkeri strain Atlantic rainforest. In particular, we draw attention to diagnosis of other febrile diseases in the presence of concomitant tick bites.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Rickettsia
/
Infecções por Rickettsia
/
Dermatopatias
/
Doenças Transmitidas por Carrapatos
/
Ixodidae
/
Picadas de Carrapatos
/
Rickettsiose do Grupo da Febre Maculosa
Tipo de estudo:
Diagnostic_studies
Limite:
Adult
/
Animals
/
Humans
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Ticks Tick Borne Dis
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Brasil