You might consider looking into Celiac Disease or Gluten Sensitive Enteropathy. Lymphocytes and Eosinophils are the predominant inflammatory infiltrates in these conditions. An easy test can be found by searching "Enterolab" - I'm a satisfied customer, no financial interest in this company.
Infectious etiologies are also a possibility, as posted above. And you might consider looking into Lyme Disease - it can affect the gut and look exactly like IBD. And Lyme can cause Gastroparesis, bladder symptoms, elevated ANA, elevated ESR, etc. There's a pretty good Lyme forum here at HealingWell with a lot of good info and smart people. Here are some website links to get you started:
What does Lyme Disease has to do with Digestion?
The ABC's of Lyme Disease, page 2, "Gastrointestinal Lyme"
Crohn's, Colitis, and Lyme Disease
The Physician as a Patient: Lyme Disease, Ehrlichiosis, and Babesiosis
International Lyme And Associated Diseases Society
Lyme Misdiagnosed as Lupus
Lyme Info - lots of links and information here
Yes, I'm the same "Razzle" from DP, LOL. Take care,
Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD (Lupus?), Osteoporosis, Anemia, T- & B-Cell Lymphopenia, malabsorption/malnutrition, Lyme Disease (Igenex Lab IgM WesternBlot positive/CDC negative), etc.
Meds: Pulmicort, Injectable Vitamin B12, Herbs, Nutritional Supplements, Homeopathy.