In general, after the stool wipe clean for a while and have residual considerations for anal fistula, anal incontinence and other diseases caused by. 1. anal fistula: that is, anorectal fistula, is the anal canal or rectum and perineal skin connected to the chronic, infected channel, is anorectal peripheral abscess broken or incision drainage of the sequelae of the lesion, by the inner mouth, fistula, the outer mouth composition. The main symptoms are repeated from the fistula external mouth outflow of a small amount of purulent, bloody, mucous secretion, anal itching, moist and eczema, can appear obvious pain. 2. Anal incontinence: also known as fecal incontinence, refers to the feces and gas can not be controlled, involuntary outflow of the anus, the course of the disease can be up to one month or more, is a symptom of defecation dysfunction. It does not include the occasional loss of anal control during diarrhea, nor does it include the increased frequency of stool and mucus outflow during anorectal inflammation. After the stool wipe clean for a while and have a residue may also be caused by prolapse, hemorrhoids and other causes, it is recommended that patients seek medical attention to clarify the diagnosis, under the guidance of the doctor for targeted treatment.