Chiggers and Chigger Bites

What Exactly Are Chiggers?
I have a lot of requests to cover topics about biting and stinging things, mostly because these are the critters that make people's experiences outdoors unpleasant. One such creature is the dreaded chigger. Now most of us have heard of them, and many of us have had their bites, but what are they really? What do chigger bites look like? Should you be worried? Let's start with chigger 101: