A 20-year-old woman presents with a one-week history of blood and mucus diarrhea and generalized cramping abdominal pain. She has felt weak since waking up today. There is no history of fever. She was diagnosed with ulcerative colitis five years ago, for which she is currently on maintenance therapy with oral mesalazine 2.5 g daily. She has no other comorbidities. She is not on any other medications, including over-the-counter supplements. Her surgical history is unremarkable. She does not smoke or drink and is currently on a normal diet.