Why does the anus still have fecal stains after wiping clean? What should I do?

　　It is possible to have fecal stains again after a while even though the anus has been wiped clean, which may be caused by anal sphincter laxity, deep residual feces, perianal moisture, hemorrhoids, anal fistula, and other reasons. These conditions can be managed through anal sphincter exercises, medication, surgical treatment, and other methods. A detailed analysis is as follows:

　　1. Anal Sphincter Laxity: Aging, childbirth injuries, chronic constipation or diarrhea, and other factors may lead to weakened anal sphincter function, making it difficult to control bowel movements effectively and resulting in residual fecal staining. It is recommended to perform anal sphincter exercises to strengthen the muscles and improve bowel control.

　　2. Deep Residual Feces: Sometimes stools are more viscous and tend to remain in the anal folds. The perianal area contains many folds where sticky feces can easily hide. Even if the surface appears clean after wiping, movement may cause feces within the folds to gradually seep out. It is recommended to use moist toilet paper after bowel movements and develop good bowel habits, aiming to defecate at a fixed time each day.

　　3. Perianal Moisture: There are numerous sweat glands around the anus, and in some individuals, these glands may be more active, causing excessive sweating and keeping the perianal skin consistently moist. It is recommended to wear breathable cotton underwear and avoid tight pants, opting instead for loose-fitting trousers, especially during summer or physical activity.

　　4. Hemorrhoids: Hemorrhoids are a common anorectal condition caused by congestion, stasis, and swelling of the venous plexus in the anal canal or lower rectum. When hemorrhoids flare up, especially with prolapsed internal hemorrhoids or enlarged external hemorrhoids, normal anal closure may be affected, allowing feces or intestinal fluid to leak out, causing fecal staining. It is recommended to use medications such as Ma Ying Long Musk Hemorrhoid Ointment or Gang Tai suppositories as directed by a physician.

　　5. Anal Fistula: An anal fistula often develops after the rupture of a perianal abscess. The external opening intermittently discharges small amounts of purulent or bloody secretions, causing fecal staining around the anus and possibly accompanied by itching. It is recommended to undergo surgical procedures such as fistulotomy or seton placement as directed by a physician to remove or open the fistula tract and resolve the issue of secretion leakage.

　　If symptoms around the anus persist without improvement, it is advisable to seek timely medical attention at a hospital to identify the underlying cause and follow medical advice for appropriate management.