Wow Sky, that is terrible they were saying it in front of patients.
I'm confused why they would think it was a crock considering it is a bacteria that can be tested for. Now, I'm curious I'll have to look more into it.
Here is some basic information on lyme disease from the cdc. It shows pictures of the characteristic rash too.
http://www.cdc.gov/ncidod/dvbid/lyme/