A spider bite is the puncture wound produced by the bite of a spider - an arachnid related to ticks and mites.

Fewer than 100 of the some 30,000 species of spiders are known to bite. Two of them, the black widow spider and the brown recluse spider, found in the U.S., are poisonous.

Lactrodectism is the clinical syndrome that follows envenomation by the black widow spider.

Arachnidism is the name given to systemic symptoms resulting from the bite of any member of the class, Arachnida, which...