Ribeiro LA, Jorge MT, Piesco RV, Nishioka S de A.Brown recluse spider bite diagnoses and lawsuits. White-tail spider bite: a prospective study of 130 definite bites by Lampona species. A prospective study of 750 definite spider bites, with expert spider identification. Diagnoses of brown recluse spider bites (loxoscelism) greatly outnumber actual verifications of the spider in four western American states. Vetter Richard S, Cushing Paula E, Crawford Rodney L, Royce Lynn A.Chemical burn misdiagnosed as brown recluse spider bite. The diagnosis of brown recluse spider bite is overused for dermonecrotic wounds of uncertain etiology. Myth: idiopathic wounds are often due to brown recluse or other spider bites throughout the United States. For those who treat spider or suspected spider bites. Lyme disease misdiagnosed as a brown recluse spider bite. Lyme disease masquerading as brown recluse spider bite. Osterhoudt Kevin C, Zaoutis Theoklis, Zorc Joseph J.Cutaneous anthrax associated with microangiopathic hemolytic anemia and coagulopathy in a 7-month-old infant. Freedman Abigail, Afonja Olubunmi, Chang Mary Wu, Mostashari Farzad, Blaser Martin, Perez-Perez Guillermo, Lazarus Herb, Schacht Robert, Guttenberg Jane, Traister Michael, et al. Reports of presumptive brown recluse spider bites reinforce improbable diagnosis in regions of North America where the spider is not endemic. Probable cause of necrotic spider bite in the Midwest. Rose G, Ross LL, Palatnick W, Embil JM.This may not be the complete list of references from this article. The Full Text of this article is available as a PDF (192K). Canadian physicians should give priority consideration to other, more likely, causes. Worldwide, spider-bite envenomation is an unlikely cause of dermonecrosis. Hobo spiders have not been reliably implicated in dermonecrosis. CONCLUSION: Brown recluse spiders are not found in Canada. Accurate identification of the spider could be critical for correct diagnosis and subsequent treatment. MAIN MESSAGE: A working diagnosis of "spider bite" or publishing a case history should be considered only when a spider is caught in the act of biting or otherwise reliably associated with a lesion. SOURCES OF INFORMATION: Worldwide, spider bites are regularly misdiagnosed as the etiologic agents in human dermonecrosis mainly as a result of inaccurate, erroneous, or hyperbolic popular and professional literature based on inference, circumstantial evidence, inferior clinical trials, and misunderstanding of the facts regarding spider-bite envenomation. OBJECTIVE: To dispel prevalent myths surrounding diagnosis of dermonecrotic and associated conditions supposedly resulting from bites of brown recluse, hobo, or other spiders in Canada.
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