It has been reported that some patients have been misdiagnosed with Ulcerative Colitis, when in fact the correct diagnosis in their specific case was Irritable Bowel Syndrome (IBS).
Irritable bowel syndrome (IBS) is a disorder that affects the large intestine. Symptoms can include abdominal cramping, bloating and pain related to passing a bowel movement, changes in appearance of faeces, changes in frequency of bowel movements, weight loss, diarrhea at night, rectal bleeding, iron deficiency anaemia, unexplained vomiting. Irritable bowel syndrome can be misdiagnosed as ulcerative colitis, microscopic colitis, Crohn’s disease, lactose intolerance, diverticulitis, celiac disease, gallstones, pancreatitis, endometriosis, intestinal bacterial overgrowth, stomach cancer, and parasites like hookworms and tapeworms.