ContentsSynopsisCodesLook ForDiagnostic PearlsDifferential Diagnosis & PitfallsBest TestsManagement PearlsTherapyReferencesView all Images (3)
Wolf spider envenomation in Adult
Print
Other Resources UpToDate PubMed

Wolf spider envenomation in Adult

Print Images (3)
Contributors: Robert Norris MD, Joanne Feldman MD, MS
Other Resources UpToDate PubMed

Synopsis

Wolf spiders, Lycosa species, are very common spiders with over 3000 species distributed worldwide in a wide range of habitats. They do not build webs but rather, like wolves, are hunters chasing down their prey. They are large, hairy, and typically brown to gray in color with various markings and lines. As hunters, they have good eyesight with conspicuously large eyes. Some species prefer living in open, disturbed habitats, like lawns, gardens, and parks, so encounters with humans are likely. However, they are shy and typically run away when disturbed.

Lycosa venom is primarily cytotoxic. Venom of some species may contain histamine.

Envenomation by Lycosa species is typically benign, though there is a common belief that wolf spider bites can cause tissue necrosis like the recluse spiders. This idea is not supported by data from several studies. A bite from a wolf spider is typically painful and lasts only 10 minutes. Puncture marks with localized bleeding, swelling, and erythema might be evident, and there may be some itching at the bite site. Systemic symptoms are rarely reported and include nausea, headache, and malaise.

Codes

ICD10CM:
T63.391A – Toxic effect of venom of other spider, accidental, initial encounter

SNOMEDCT:
217665000 – Poisoning due to venomous spider

Look For

Subscription Required

Diagnostic Pearls

Subscription Required

Differential Diagnosis & Pitfalls

Best Tests

Subscription Required

Management Pearls

Subscription Required

Therapy

Subscription Required

References

Subscription Required

Last Updated: 06/14/2018
Copyright © 2018 VisualDx®. All rights reserved.
Wolf spider envenomation in Adult
Print 3 Images
View all Images (3)
(with subscription)
Wolf spider envenomation : Edema, Spider bite, Painful skin lesion, Skin bite site
Organism image of Wolf spider envenomation
Copyright © 2018 VisualDx®. All rights reserved.