The differences between Crohn's disease and common enteritis start with symptoms. Crohn's disease generally involves abdominal pain, diarrhea, and bloody stools, with symptoms recurring frequently and tending to relapse easily after medication. Common enteritis may also involve diarrhea, but it is rare for the stool to contain mucus resembling nasal discharge, and while mild abdominal pain may occur, bloody stools are uncommon. Moreover, common enteritis generally responds better to treatment, and the likelihood of relapse is lower. Under colonoscopy, Crohn's disease shows deep, longitudinal ulcers in the intestines, while common enteritis usually shows only some white mucus or mucosal hyperemia and at most mild erosion, which is much less severe compared to Crohn's disease. There are also differences in treatment. Crohn's disease requires specific medications, whereas common enteritis is generally treated with probiotics, thus the two conditions differ significantly.