Patients with colitis generally have normal routine blood tests, indicating that their white blood cells, hemoglobin, and platelets are generally normal. Patients with colitis commonly present clinically with abdominal discomfort and abnormal bowel movements. Abdominal discomfort typically manifests as discomfort in the lower abdomen and left side, with symptoms such as bloating, colicky pain, and dull pain, often occurring sporadically and generally related to diet and bowel movements. If abdominal pain improves after passing gas or stools, then the bowel movement abnormalities typically manifest as an increased frequency of bowel movements, generally more than 2 times. The stool texture is relatively loose, appearing mushy, and some patients may have watery stools. However, patients generally do not have bloody stools, and there are no clear changes in bowel abnormalities at night after a good sleep, so treatment is currently considered symptomatic.