Bowel leakage can be difficult to talk about, but it is a medical condition, not a personal failing. It is also more common than many people realize. If it is affecting your daily life, you do not have to simply live with it. Identifying the type and cause is the first step toward finding the right treatment.
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What is fecal incontinence?
Fecal incontinence is the accidental passing of bowel contents from the anus. This may include solid stool, liquid stool, or mucus. Some people experience only occasional staining, while others have more frequent or complete bowel movements they cannot control.
Other terms for fecal incontinence include:
- Bowel incontinence
- Accidental bowel leakage
- Anal incontinence
- Stool leakage
Fecal incontinence is not the same thing as diarrhea, although diarrhea can cause or worsen leakage. It is also possible for constipation to cause leakage when liquid stool moves around hardened stool in the rectum.
What are the different types of fecal incontinence?
The two most commonly discussed types are urge and passive fecal incontinence.
Urge fecal incontinence
You feel the need to have a bowel movement but cannot hold it long enough to reach a toilet. Urge leakage may be related to loose stool, reduced rectal capacity, muscle weakness, muscle coordination, or nerve problems.
Passive fecal incontinence
Stool or mucus leaks without you noticing it or without a clear sensation that you need to use the bathroom. This may be associated with changes in sensation, nerve function, or the muscles that keep the anus closed.
Some people have features of both types. Others experience fecal seepage after a bowel movement or leakage related to incomplete emptying. Because these patterns can have different causes, describing exactly what happens can help a healthcare professional determine the appropriate evaluation.
How common is fecal incontinence?
Fecal incontinence affects women and men of many ages, although it becomes more common with age. The National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) estimates that it affects approximately 7% to 15% of adults who live outside hospitals or nursing homes.
The true number may be higher because many people feel embarrassed and do not mention bowel leakage to a healthcare provider. Women may develop symptoms following pregnancy or vaginal delivery, but fecal incontinence is not exclusively a women’s condition. Men can also experience it because of bowel disorders, nerve problems, surgery, aging, or other causes.
What causes bowel leakage?
Fecal incontinence is a symptom with several possible causes. More than one factor may be involved.
Diarrhea
Loose or watery stool fills the rectum quickly and is more difficult to hold than formed stool. Diarrhea is a common risk factor for bowel leakage and may be related to an infection, medication, irritable bowel syndrome, inflammatory bowel disease, food intolerance, or another digestive condition.
Constipation
Large or hardened stool can stretch and weaken the rectum. Liquid stool may then leak around the blockage. Repeated straining may also affect the nerves and muscles involved in bowel control.
Muscle injury or weakness
The anal sphincter and pelvic floor muscles help maintain bowel control. These muscles may be injured or weakened by vaginal childbirth, pelvic or rectal surgery, trauma, or age-related changes.
Nerve damage or reduced sensation
Nerves help you sense when the rectum is full and control the muscles used to hold and release stool. Diabetes, multiple sclerosis, Parkinson’s disease, stroke, spinal cord injury, chronic straining, and other neurologic conditions may interfere with these signals.
Changes in the rectum or surrounding anatomy
Rectal prolapse, rectocele, hemorrhoids, inflammation, scar tissue, radiation treatment, and previous surgery may affect storage, sensation, emptying, or closure.
Childbirth
Vaginal delivery can injure the anal sphincter, pelvic floor muscles, or nearby nerves. The risk may be greater following a large baby, forceps-assisted delivery, vacuum-assisted delivery, significant tearing, or an episiotomy. Symptoms may begin soon after delivery or become noticeable years later as tissues and muscles change.
How is fecal incontinence diagnosed?
A healthcare professional will usually begin by asking about your symptoms, medical history, medications, diet, previous pregnancies, and any pelvic, anal, or rectal surgery. You may be asked about:
- How often leakage occurs
- Whether the stool is solid, liquid, or mucus
- Whether you feel urgency before it happens
- Whether leakage occurs without your awareness
- Constipation, straining, or incomplete emptying
- Foods, medications, or situations that trigger symptoms
- Urinary leakage or other pelvic floor symptoms
Keeping a bowel diary for one or two weeks can make this conversation easier. Record the timing of bowel movements, stool consistency, urgency, leakage episodes, food, medication, and possible triggers.
Depending on your symptoms, the evaluation may also include a physical examination or tests that assess the anal sphincter, rectum, nerves, sensation, and muscle coordination. A primary care clinician may refer you to a gastroenterologist, colorectal specialist, urogynecologist, or pelvic floor physical therapist.
What are the treatments for fecal incontinence?
Treatment should address the cause of the leakage rather than follow a single approach for everyone. Many people begin with conservative, nonsurgical care.