Home   Chapter Home   Jobs   Conferences   Fellowships   Books



Advertisement

Skin-nontumor / Clinical Dermatology

Infestations

Brown recluse spider


Reviewer: Mowafak Hamodat, MB.CH.B, MSc., FRCPC, Eastern Health, St. Johns, Canada (see Reviewers page)
Revised: 11 July 2011, last major update July 2011
Copyright: (c) 2002-2011, PathologyOutlines.com, Inc.

Definition
=========================================================================

● Bite causes extensive necrosis, hemorrhage, blistering and ulceration (Wikipedia)
● A chronic pyodermal gangrenosum-like reaction has also been reported

Terminology
=========================================================================

● Also called loxoscelism (genus of spider is Loxosceles), necrotizing arachnidism

Clinical features
=========================================================================

● Diagnosis can be made by swabbing the lesion and using a specific enzyme-linked immunosorbant assay (ELISA) to detect the venom


Location of brown recluse spider in US

Treatment
=========================================================================

● Controversial (Ohio State University Fact Sheet)

Clinical images
=========================================================================



Brown recluse spider and US quarter

       
Brown recluse spider bites

Micro description
=========================================================================

● Varies from neutrophilic vasculitis with hemorrhage to arterial wall necrosis to eschar covered ulceration and subcutaneous necrosis
● Usually eosinophils in the inflammatory infiltrate

End of Skin-nontumor / Clinical Dermatology > Infestations > Brown recluse spider


This information is intended for physicians and related personnel, who understand that medical information is often imperfect, and must be interpreted in the context of a patient's clinical data using reasonable medical judgment. This website should not be used as a substitute for the advice of a licensed physician.

All information on this website is protected by copyright of PathologyOutlines.com, Inc. Information from third parties may also be protected by copyright. Please contact us at copyrightPathOut@gmail.com with any questions (click here for other contact information).