Medical Definitions with Pictures
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Photo and definition with picture of Brown recluse spider bite

The brown recluse spider lives throughout the Southern half of the United States. There are ten different species, six of which are confirmed to be poisonous. The spiders are tan to brown and most species exhibit a violin-shaped marking on the dorsum of the cephalothorax.  They tend to live in dark dry spaces such as attics, closets and wood piles, and generally they are not aggressive but rather bite when forced to.

The bite generally causes some mild stinging or burning and ulcerative necrosis may follow within several hours to several weeks. The initial lesion may be red, edematous or blanched and may later may develop a blue-gray halo around the puncture.

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