Arachnid envenomations.

Humans have interacted with arachnids since their prehistoric trip from the Garden of Eden. Modern travel has placed both patient and physician in contact with creatures and diseases far outside the scope of our day-to-day medical practice. The understanding of life cycles and toxicity of these fascinating spiders and scorpions better prepares the emergency physician to provide more comprehensive medical care and perform as a knowledgeable patient advocate.