Most household spiders don't pose much of a threat to humans, but some bigger spiders can have poisonous fangs. Dr. Tom Miller and dermatologist Dr. Mark Eliason discuss how to treat common spider bites and what to do if you get bit by one that's more dangerous. Find out how to react to bites from black widows, hobo spiders, brown recluse spiders, and those big hairy spiders that may be living in your basement.