• James H Diaz and Kim Edward Leblanc.
• Louisiana State University School of Medicine, New Orleans, Louisiana, USA. jdiaz@lsuhsc.edu
• Am Fam Physician. 2007 Mar 15; 75 (6): 869-73.

AbstractThere are more than 30,000 species of spiders, most of which cannot inflict serious bites to humans because of their delicate mouthparts and impotent or prey-specific venoms. However, some spiders produce toxic venoms that can cause skin lesions, systemic illnesses, and neurotoxicity. One of the more common bites is inflicted by the widow spiders (Latrodectus species). A bite from a widow spider results in muscle spasms and rigidity starting at the bite site within 30 minutes to two hours. Another common bite is inflicted by the recluse spider (Loxosceles species). Most bites from these spiders occur early in the morning and are initially painless. These bites usually progress to ulcerating dermonecrosis at the bite site. Spider bites can be prevented by simple measures. Early species identification and specific management can prevent most serious sequelae of spider bites.

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