More Than Just Stool: Hypereosinophilic Syndrome Presenting as Persistent Diarrhea in a Patient With Ulcerative Colitis.

We highlight a case of non-infectious diarrhea that progressed despite supportive care, prompting further workup. A 50-year-old man presented with 1 week of voluminous diarrhea, nausea, emesis, and abdominal pain. His history included ulcerative colitis, primary sclerosing cholangitis, treated via total colectomy with ileoanal pouch, treated disseminated complex, and international travel.