Are diverticulitis the same as ulcerative colitis? Diverticulosis is a condition with small pouches in the wall of the digestive tract. Symptoms and signs of diverticulitis include bloating, constipation, and abdominal pain. Ulcerative colitis (UC) is an acute or chronic inflammation of the colon. Symptoms and signs of anemia, are weight loss, and diarrhea. There is no cure for either disease.