Dictionary.com
definitions

loxoscelism

[lŏk-sŏs′ə-lĭz′əm]
n.
  1. A condition produced by the bite of the brown recluse spider of North America and characterized by a gangrenous slough at the site of bite, nausea, malaise, fever, hemolysis, and thrombocytopenia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.