Most articles talk about
how Lyme can mimic Crohn's, but this one says:
"The GI tract is especially vulnerable to machinations of such co-infections as bartonellosis, mycoplasmosis, human anaplasmosis (HA), and human monocytic ehrlichiosis (HME). Syndromes exactly similar to Irritable Bowel Syndrome (IBS), Crohn's Disease, and cholecystitis, for example, may not have readily suggested a borrelial etiology to the diagnostician but Lyme increasingly is known to be a potential contributor to each."
www.thehumansideoflyme.net/viewarticle.php?aid=62