Yes, a kidney stone can cause temporary incontinence, but the mechanism is different from other causes

A kidney stone can trigger incontinence, though not in the way a urinary tract infection or nerve damage does. When a stone moves through your ureter — the tube carrying urine from your kidney to your bladder — it can irritate the lining and cause sudden, urgent needs to urinate. This urgency can lead to leakage before you reach a bathroom. The incontinence usually stops once the stone passes or is removed, unlike incontinence from permanent nerve or muscle damage.

The incontinence from a kidney stone is almost always urgency incontinence — the sudden, hard-to-control urge to urinate. You may also notice pain in your side or lower back, blood in your urine, or difficulty urinating. These symptoms together are a strong sign the incontinence is stone-related rather than a separate condition.

If you have had a kidney stone diagnosis and are experiencing new incontinence, the two are likely connected. However, if incontinence continues after the stone has passed or been treated, you should discuss this with your doctor, as a separate cause may be present.

Key Takeaways

  • Kidney stones cause urgency incontinence — sudden, intense urges to urinate that can result in leakage.
  • The incontinence is temporary and usually resolves once the stone passes or is removed by a doctor.
  • You may notice side or back pain, blood in urine, or difficulty urinating alongside the incontinence.
  • If incontinence persists after stone treatment, talk to your doctor about whether another cause is present.
  • Staying hydrated and avoiding dehydration can help prevent kidney stones and the incontinence they cause.

How a kidney stone irritates the urinary tract

A kidney stone forms when minerals in your urine crystallize and harden into a solid mass. As the stone moves from your kidney through the ureter toward your bladder, it scrapes and inflames the delicate lining of the ureter. This irritation sends signals to your bladder that it needs to empty, even when it is not full.

Your bladder responds to this irritation by contracting involuntarily and frequently. These contractions create the urgent, sometimes overwhelming need to urinate. If the urge comes on suddenly and your pelvic floor muscles cannot hold back the urine in time, leakage occurs. This is why urgency incontinence from a kidney stone often feels sudden and unpredictable.

The severity of incontinence depends on the stone's size and location. A larger stone or one lodged in a narrow part of the ureter causes more irritation and more frequent urgency. A small stone that moves quickly through the ureter may cause only mild symptoms.

Other symptoms that point to a kidney stone

Incontinence alone is rarely the only sign of a kidney stone. Most people with a stone experience sharp, stabbing pain in the side, back, or lower abdomen. This pain can come and go as the stone moves. You may also see blood in your urine, which can range from visible red streaks to microscopic amounts only detected by a test.

Difficulty or pain during urination is common, as is a constant urge to urinate even when little urine is present. Some people feel nausea or vomiting. If you have incontinence along with any of these symptoms, especially pain and blood in urine, contact your doctor promptly. These symptoms together make a kidney stone diagnosis much more likely than incontinence from other causes.

Fever or chills alongside these symptoms can signal a urinary tract infection caused by the stone blocking urine flow. This is a medical emergency and requires when ready attention.

How doctors diagnose and treat kidney stones

Your doctor will ask about your symptoms and may order imaging tests to confirm a kidney stone. A CT scan or ultrasound can show the stone's size, shape, and location. A urinalysis checks for blood and signs of infection. Once a stone is confirmed, treatment depends on its size and whether it is causing a blockage.

Small stones often pass on their own with time and hydration. Your doctor may recommend drinking plenty of water and taking pain medication while you wait. Larger stones or stones that block urine flow may need to be broken up using sound waves (a procedure called extracorporeal shock wave lithotripsy) or removed surgically. Once the stone is gone or passes, the irritation to your ureter stops, and urgency incontinence usually resolves within days to weeks.

During treatment, your doctor may also prescribe medications to relax the ureter and help the stone pass, or antibiotics if infection is present. Managing pain and staying hydrated are key parts of the treatment plan.

The difference between stone-related incontinence and other causes

Incontinence from a kidney stone is temporary and tied to the stone's presence. Once the stone is gone, the incontinence stops. This is different from incontinence caused by weak pelvic floor muscles, nerve damage, or an overactive bladder, which persist even after other urinary problems are treated.

Stone-related incontinence is also almost always urgency incontinence — the sudden, hard-to-control urge to go. Stress incontinence (leakage during coughing, sneezing, or exercise) or overflow incontinence (constant dribbling) are not typical of kidney stones. If your incontinence fits one of these other patterns, a kidney stone is less likely to be the cause.

The timeline also matters. If incontinence started around the same time as kidney stone symptoms and goes away after the stone is treated, the stone was almost certainly the cause. If incontinence began years ago and persists regardless of kidney stone treatment, another cause is likely at play.

Steps to prevent kidney stones and the incontinence they cause

The best way to avoid stone-related incontinence is to prevent kidney stones in the first place. Drinking enough water throughout the day is the single most important step. Most doctors recommend drinking enough to produce at least 2 liters of urine daily. Pale or clear urine is a sign you are drinking enough; dark yellow urine suggests you need more fluids.

Limiting salt, animal protein, and high-oxalate foods (such as spinach, nuts, and chocolate) can reduce your risk, especially if you have had stones before. Staying active and maintaining a healthy weight also help. If you have a history of kidney stones, your doctor may recommend specific dietary changes or medications based on the type of stone you formed.

If you have had one kidney stone, your risk of forming another is high. Discuss prevention strategies with your doctor, especially if you are prone to dehydration or have a family history of stones.

When to contact your doctor about stone-related incontinence

Contact your doctor if you develop sudden urgency incontinence along with side or back pain, blood in urine, or difficulty urinating. These symptoms together warrant prompt evaluation. Do not wait to see if the symptoms pass on their own, as a blocked stone can lead to kidney damage or infection.

If you have been diagnosed with a kidney stone and are experiencing incontinence, let your doctor know. They can confirm that the stone is the cause and monitor your progress as it passes or is treated. If incontinence continues weeks after the stone has passed or been removed, mention this at a follow-up visit, as it may signal a separate issue.

Fever, severe pain, or inability to urinate at all are medical emergencies. Seek when ready care if you experience any of these alongside kidney stone symptoms.

Frequently Asked Questions

How long does incontinence last after a kidney stone passes?

Urgency incontinence from a kidney stone usually improves within a few days to a week after the stone passes. The ureter needs time to heal from the irritation, so some urgency may linger for a few weeks. If incontinence persists beyond a month after the stone is gone, talk to your doctor about other possible causes.

Can a kidney stone cause stress incontinence?

Kidney stones typically cause urgency incontinence, not stress incontinence. Stress incontinence — leakage during coughing, sneezing, or exercise — is caused by weak pelvic floor muscles or nerve damage, not by stone irritation. If you have stress incontinence, a kidney stone is unlikely to be the cause.

Will incontinence go away after the stone is removed?

Yes, in most cases. Once the stone passes or is surgically removed, the irritation to your ureter stops, and urgency incontinence resolves. However, if incontinence continues after treatment, your doctor should investigate whether another condition is present.

Can I have a kidney stone without pain?

Some people have small kidney stones that cause no pain, though they may still cause urgency or incontinence. A stone discovered during imaging for another reason may be painless. However, if a stone is large enough to cause incontinence, it usually causes at least some discomfort or pain as well.

Is incontinence from a kidney stone permanent?

No. Incontinence caused by a kidney stone is temporary and resolves once the stone is treated. Unlike incontinence from nerve damage or weak muscles, stone-related incontinence does not persist after the underlying problem is fixed.