Generally speaking, the abdomen does not usually harden when touched in cases of colitis. However, if the patient experiences a hardening of the abdomen, it's important to consider the possibility of malignant tumors in the colon or an intestinal obstruction. The primary symptoms of colitis are mucous stools, pus and blood in stools, or alternating episodes of diarrhea and constipation. Diagnosis of colitis is mainly through examination with a colonoscope, which can reveal colon mucosal congestion, edema, erosion, etc. For the treatment of colitis, consideration can be given to orally administering drugs that regulate the intestinal flora, such as bacillus subtilis, compound lactobacillus, and others. (The use of medications should be under the guidance of a physician.)