I would appreciate it if you could shed some light on the whole thing for me. Dear Tara, Your diarrhea, weight loss and malabsorption may be the result of active Crohn's disease but other possibilities must be considered. I assume that the terminal ileum was resected. This part of the small intestine is the site of absorption of bile acids, compounds involved in fat absoprtion. Excessive loss of bile acids can lead to diarrhea by two possible mechanisms.
Bile acids entering the colon can directly cause a secretory diarrhea.
The second mechanism is fat malabsorption which also causes a secretory diarrhea, Because the treatments are different, it is necessary to know which explanation is implicated in your case. The extent of ileum resection will provide an important clue as to the possible etiology for your problem. Another explanation for your symptoms is bacterial overgrowth, also related to the bowel resection. Finally, one must also consider the possibility of Crohn's disease as the cause of the symptoms. If you rproblem is Crohn's disease, the therapeutic options are much more limited given your previous side effects from treatment.