Brown recluse are spiders native to North America. They are extremely venomous, and can kill a human. Their venom causes the decomposition of tissue around bite. This may lead to severe gangrene, and if not treated immediately.
How to Treat Spider Bites. Spider bites can be itchy and painful. Some bites are serious, but most can be easily treated. While it's helpful to identify the spider bite, you should always seek immediate medical care, because it's pretty.