The patient, a 42-year-old male, presented with bloody stools, abdominal pain, vomiting and fever for 4 days. Colonoscopy revealed erythema, erosions and polypoid lesions in the colon. Histological investigations showed ulceration, crypt distention and infiltration. Stool examination detected Entamoeba histolytica trophozoites. The patient was diagnosed with ulcerative colitis and amoebiasis. He received intravenous metronidazole, pantoprazole and hydration along with lactic acid bacillus supplements. At discharge, he was prescribed a tapering course of oral metronidazole, pantoprazole and lactic acid bacillus to treat his