I was diagnosed with Crohn's in 1988, even though the symptoms I had then have never re-occurred since the initial treatment with Flagyll and Prednisone. Also, all immunomodulating/immune-suppressing medications used to treat Crohn's have made my symptoms worse instead of better (except Prednisone, which is contra-indicated for Lyme but does work very well on my allergies and gut dysmotility problems). I also have Gastroparesis, Pelvic Dyssynergia, and Dysphagia, with suspected dysmotility in my small bowel as well. It is known Lyme can cause these dysmotility problems. I've had Lyme symptoms since long before 1988, so my personal opinion is that my particular case of "Crohn's" is actually Lyme and also possibly Bartonella affecting my gut. I also have a lot of food allergies/sensitivities/intolerances also thought to be caused by gastrointestinal Lyme. Some believe there is a link between Lyme, Vitamin B12 deficiency, and Gluten Sensitivity, too (all of which I've been diagnosed with). Biopsies done at a major and well-respected medical institution could not find any evidence I've ever had Crohn's Disease, even though local GI docs insist all my symptoms are either due to Crohn's, "secondary Lupus" (whatever that means...secondary to what? They have no clue.), or are all in my head.
Here are several links that you may find interesting:
"'Bell's Palsy of the Gut' and Other GI Manifestations of Lyme and Associated Diseases"
"What does Lyme Disease has to do with Digestion?"
"Crohn's, Colitis, and Lyme Disease"
A book I read, called "The Homeopathic Treatment of Lyme Disease" (by Peter Alex, Edited by Doug Smith), also says that Lyme Disease can mimic Crohn's Disease.
Chronic Lyme Disease, Chronic Bartonella (clinical dx only), Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, chronic Lymphopenia, etc.; G-Tube; Currently trying to wean off TPN.
Meds: Pulmicort, IV Ceftazidime, Heparin (to flush PICC line), Claritin, Domperidone, Colloidal Silver (used topically), probiotics, Milk Thistle, Ailanthus, homeopathy.