[Skip to Content]
Access to paid content on this site is currently suspended due to excessive activity being detected from your IP address Please contact the publisher to request reinstatement.
[Skip to Content Landing]
Views 366
Citations 0
February 15, 2017

NOT RECLUSE—A Mnemonic Device to Avoid False Diagnoses of Brown Recluse Spider Bites

Author Affiliations
  • 1SpiderTek, Rolla, Missouri
  • 2Department of Dermatology, University of Missouri Health Sciences Center, Columbia
  • 3Department of Entomology, University of California, Riverside, Riverside
JAMA Dermatol. Published online February 15, 2017. doi:10.1001/jamadermatol.2016.5665

The notoriety of the brown recluse spider, Loxosceles reclusa, has resulted in many dermatological conditions being misdiagnosed as the bite of this arachnid. These misdiagnoses occur throughout North America and are of concern especially in American states and Canadian provinces where no brown recluse populations are known to exist.

About 40 medical conditions have been or could be misdiagnosed as recluse bites. A sampling of these misdiagnoses includes infections caused by Staphylococcus aureus, Bacillus anthracis, Borrelia burgdorferi, Sporothrix schenckii, the herpes zoster virus, and even lymphoproliferative conditions such as lymphomatoid papulosis.1 Because past medical reports of loxoscelism often did not adhere to the principles of evidence-based medicine, these erroneous reports artificially increased the list of signs associated with loxoscelism, decreasing diagnostic accuracy.

First Page Preview View Large
First page PDF preview
First page PDF preview