Hello everyone! I recently had a Colonoscopy to find out what is going on with me.. I have had bloody diarrhea, dizziness, muscle aches/pains, fatigue and nausea for the past 9 months. The Dr. said that he saw some inflammation in the left side of my colon and took some Biopsies. Is this how he can tell if it is Crohn's or UC? Can't he tell just by the imaging through the Colonoscopy? What can they determine under a scope? Also, he prescribed me Lialda 2x's a day..