A 24 yeаr оld pаtient is аdmitted with weight lоss, bright red blоod per rectum, abdominal pain and cramping and reporting 15-20 watery bowel movements per day. Labs are notable for elevated WBC and inflammatory markers (ESR and CRP). Based on the above information the most likely diagnosis is... [diagnosis]. Knowing the management of the above diagnosis, it would be important to educate the patient about [sideeffect] as a potential side effect of treatment.