There's always something wrong with shit.

1. Bacillary dysentery: Bacterial dysentery is mainly related to shigella infection. The intestinal mucosa of the patient has mucus exudation, which stimulates the anus and causes defecation, but the amount of feces is small, there will be a feeling of unclean defecation.

2. Ulcerative colitis: Ulcerative colitis may be related to immune abnormalities, intestinal environment disorders and other factors. The ulcer surface has mucus exudation that stimulates the anus and causes defecation, but the amount of feces is small, resulting in a feeling of unclean defecation.

3. Rectal cancer: The tumor in the rectum continuously stimulates the rectum and frequently produces defecation. If the amount of feces is small, there will be a feeling of unclean defecation.