The anal overflow may be caused by enlarged hemorrhoids, anal flaccidity or anal fistula, and anal flaccidity should be checked by anal finger examination at a regular anorectal specialist hospital. If it is only a mild degree of laxity then you can carry out anal lift training to relieve anal laxity, while the severe degree requires surgery. If the hemorrhoid is enlarged it will cause the hemorrhoid to repeatedly prolapse out of the anus and a mass of flesh may be seen outside the anus, this will occur when the hemorrhoid spills feces or fecal fluid, this can be done by applying hemorrhoid cream and taking a sitz bath with potassium permanganate. In the case of anal fistula, there is a small amount of mucus and pus and the fluid is yellow in color, and there is swelling and pain. In the case of a high fistula, there may be fecal or gas discharge. The fistula is usually treated with surgery such as a wire or fistulotomy, and antibiotics should be used after surgery.