FAQ: What is the appropriate treatment for an acute flare of ulcerative colitis? The immediate question to be resolved is the need for hospital admission.This decision depends on severity of the colitis. This can easily be underestimated by both patient and Dr. Specialist assessment may be required.A severe attack is suggested by the following features; 6 bowel motions /day and needing to get up at night to pass a bowel motion. Fever >37.5oC. Abnormal blood tests. Any significant abdominal pain or tenderness.Hospital admission will usually be required with 2 or more of these features.