What causes incontinence

Incontinence happens when the muscles that hold urine or stool weaken, when nerves that signal the bladder stop working properly, or when the bladder or bowel itself changes. The cause is almost always treatable or manageable — incontinence is not a normal part of aging, and it is not something you have to live with.

The most common causes fall into a few categories: muscle weakness, nerve damage, urinary tract problems, medications, and constipation. Many people have more than one cause at the same time. A doctor can usually identify which one is happening by asking about your symptoms, reviewing your medications, and sometimes doing a straightforward test.

Understanding what is causing your incontinence matters because the treatment changes depending on the cause. Treating the underlying problem often stops the incontinence entirely, or at least makes it much easier to manage.

Key Takeaways

  • Weak pelvic floor muscles are the most common cause of incontinence in older women, and can often be strengthened with exercises.
  • Medications including blood pressure drugs, diuretics, and sedatives can trigger incontinence as a side effect, and switching or adjusting the dose sometimes stops it.
  • Urinary tract infections cause sudden incontinence that was not there before, and the incontinence usually stops once the infection is treated.
  • Constipation puts pressure on the bladder and bowel, and treating the constipation often resolves incontinence at the same time.
  • Nerve damage from diabetes, stroke, or spinal cord problems can affect bladder control, and a doctor can help you manage it with scheduled bathroom trips or other strategies.

Weak pelvic floor muscles

The pelvic floor is a group of muscles that sits under your bladder and bowel and holds them in place. When these muscles weaken — usually from pregnancy, childbirth, weight gain, or straightforward aging — urine can leak when you cough, sneeze, laugh, or exercise. This is called stress incontinence.

Stress incontinence is the most common type in women over 65. It happens because the muscles that normally squeeze shut when pressure builds are no longer strong enough to do the job. The good news is that pelvic floor exercises (sometimes called Kegel exercises) can rebuild these muscles and stop the leaking in many cases. A physical therapist or your doctor can show you how to do them correctly.

Men can also develop weak pelvic floor muscles, especially after prostate surgery. The same exercises work for men, though it takes practice to find and use the right muscles.

Medications that trigger incontinence

Many common drugs have incontinence as a side effect. Blood pressure medications called diuretics make your kidneys produce more urine. Sedatives and sleeping pills relax the muscles that hold urine in. Some antidepressants and antihistamines can interfere with the nerve signals that control the bladder. Even over-the-counter cold medicines can contribute.

If you started taking a new medication around the time your incontinence began, that timing matters. Tell your doctor which drugs you take and when the incontinence started. Sometimes switching to a different medication or adjusting the dose stops the problem. Never stop taking a medication on your own, but do ask your doctor whether the drug could be causing the incontinence.

Diuretics are especially common culprits because they are prescribed for heart disease and high blood pressure. If you take one, your doctor may be able to adjust when you take it — taking it in the morning instead of evening, for example — so the extra urine production happens during the day when you can reach a bathroom.

Urinary tract infections

A urinary tract infection (UTI) can cause sudden incontinence that was not there before. The infection irritates the bladder lining, making it contract unexpectedly and leak urine. UTIs are common in older adults, especially women, and the incontinence usually stops as soon as the infection is treated with antibiotics.

If you suddenly start leaking urine and you also have pain or burning when you urinate, urgency to go frequently, or cloudy or bloody urine, a UTI is likely the cause. A straightforward urine test at your doctor's office can confirm it. Treating the infection usually resolves the incontinence within days.

Some older adults have chronic or recurring UTIs. If you have incontinence that comes and goes along with other UTI symptoms, keeping a log of when it happens can help your doctor spot the pattern and decide whether preventive treatment makes sense.

Constipation and bowel problems

When stool builds up in the colon, it takes up space and puts pressure on the bladder. This pressure can trigger urinary incontinence or make it worse. Treating the constipation — by increasing fiber and water, using a stool softener, or in some cases taking a laxative — often stops the incontinence at the same time.

Constipation is extremely common in older adults because of medications, lower activity, and changes in diet. If you have not had a bowel movement in three days, or if your stools are hard and difficult to pass, constipation is likely contributing to your incontinence. Your doctor can recommend safe ways to treat it.

Bowel incontinence (leaking stool) can also happen when constipation is severe. Liquid stool can leak around a blockage of hard stool. This sounds counterintuitive, but treating the constipation is the solution.

Nerve damage and neurological conditions

Diabetes, stroke, Parkinson's disease, multiple sclerosis, and spinal cord injury can all damage the nerves that carry signals between your brain and bladder. When these nerves do not work properly, your bladder may not empty completely, may contract at the wrong time, or may not send the signal that it is full.

Nerve damage incontinence is often managed by scheduling bathroom trips at regular times (called timed voiding) rather than waiting for the urge to go. Some people also use catheterization — a thin tube inserted into the bladder to drain it — though this is usually a last resort. Your doctor or a urology specialist can help you find the approach that works best.

If you have diabetes, keeping your blood sugar in range can slow nerve damage and sometimes prevent incontinence from developing. If you have had a stroke, recovery can take months, and bladder control often improves as the brain heals.

Enlarged prostate and other structural problems

In men, an enlarged prostate gland can squeeze the urethra (the tube that carries urine out of the body) and make it hard to empty the bladder completely. Urine backs up, and when the bladder gets too full, it leaks. This is called overflow incontinence. Medications or, in some cases, a procedure can shrink the prostate or widen the urethra.

Women can develop structural problems too — a prolapsed bladder or uterus can change the angle of the urethra and cause leaking. A gynecologist or urogynecologist can evaluate this and discuss treatment options, which range from pelvic floor exercises to a minor procedure.

Bladder or kidney stones, tumors, and scar tissue from previous surgery can also block the flow of urine or irritate the bladder. These are less common but important to rule out if incontinence is new or has changed.

Frequently Asked Questions

Can incontinence be a sign of something serious?

Incontinence itself is usually not an emergency, but sudden incontinence can signal a UTI, stroke, or spinal cord problem that needs prompt attention. If incontinence starts suddenly along with weakness, numbness, confusion, or difficulty speaking, seek medical care right away. Otherwise, schedule an appointment with your doctor to find out what is causing it.

Is incontinence a normal part of getting older?

No. While incontinence is common in older adults, it is not something everyone experiences, and it is almost always treatable. Many people assume they have to live with it, but most causes can be managed or reversed with the right approach.

Can weight loss help with incontinence?

Yes, especially for stress incontinence. Extra weight puts pressure on the bladder and weakens the pelvic floor muscles. Losing even 5 to 10 percent of your body weight can reduce leaking significantly. Combined with pelvic floor exercises, weight loss often stops stress incontinence entirely.

What should I do if I think a medication is causing my incontinence?

Write down which medication you started taking and when your incontinence began. Tell your doctor about the timing. Do not stop taking the medication yourself, but ask whether switching to a different drug or adjusting the dose might help. Your doctor may also suggest taking it at a different time of day.

How do I know if a UTI is causing my incontinence?

UTI-related incontinence usually comes on suddenly and is accompanied by pain or burning when you urinate, urgency to go often, or cloudy or bloody urine. A urine test at your doctor's office confirms it. Once you start antibiotics, the incontinence typically stops within a few days.