What's wrong with dirty underwear?

External

hemorrhoids are hemorrhoids that grow below the dentate line and are relatively close to the anus. Their existence may increase the complexity around the anus. It is not easy to wipe the secretions attached to the external hemorrhoids after defecation, so the above situation will occur.

2

.

The fistula formed by anal fistula may cause feces to remain in the fistula, causing it to be difficult to wipe clean.

3. The anal sphincter relaxes.

With age or the influence of some diseases, the anal sphincter may relax and cannot effectively control the discharge of feces. After defecation, there may still be a small amount of secretions overflowing the anus, and the above situation may occur.