I recently had a colonoscopy and had a biopsy on two palyps, which didn't show I had celiac sprue. However, blood tests did show that I have it.
I was diagnosed in 1990 with a gluten intolerant disease called dermatitis herpetiformis, but it has been in remission for about 4 or 5 years. Up until that time, I had been on a gluten free diet. During remission, I have eaten what I wanted. DH is a skin disease, and when it was active, any gluten products would affect my skin. During remission, I had no symptoms. DH also affects the bowels, but while in remission, I didn't realize I was having issues, and only in the past year have I began having problems with my bowels, which initiated the colonoscopy.
My doctor's appointment this week also revealed to me that celiac sprue can also cause your liver enzymes to get out of whack. I'm now scheduled for a liver biopsy to make sure my liver isn't out of whack.
Bottom line is there are many things besides diarrhea which are related to this disease.