What is a hallmark symptom of Ulcerative Colitis?

Diarrhea with blood is indeed a hallmark symptom of Ulcerative Colitis. This condition is characterized by inflammation and ulceration of the colonic mucosa, which often leads to the presence of blood in the stool. The inflammation in the lining of the colon can cause bleeding, resulting in symptoms that typically include frequent and urgent bowel movements, along with the distinctive presence of blood and/or mucus.

Other symptoms often associated with Ulcerative Colitis can include abdominal pain, cramping, and an increased urgency to defecate, but the presence of blood in the diarrhea is particularly significant as it directly relates to the damage occurring in the colon. This distinguishing symptom helps healthcare providers identify and confirm the diagnosis of Ulcerative Colitis in patients.