Medically reviewed by Mr Maneesh Ghei, Consultant Urological Surgeon (GMC: 5208045)
Kidney stone pain is one of the most intense forms of pain a person can experience — but it is far from the only condition that causes severe flank or abdominal pain. Kidney stones affect around 1 in 10 people at some point in their lives, yet their symptoms overlap significantly with a range of other conditions. Getting the right diagnosis matters because the treatment for each cause is completely different.
Key Takeaways
- Kidney stone pain is typically severe, comes in waves and shifts as the stone moves — but many other conditions produce identical symptoms
- UTIs, appendicitis, gallstones, ovarian cysts and musculoskeletal problems are among the most common conditions mistaken for kidney stones
- Appendicitis and ectopic pregnancy are medical emergencies — seek immediate care if either is suspected
- Blood in the urine alongside flank pain is a strong indicator of a urological cause, but still requires diagnosis
- If symptoms are severe, persistent, or you are uncertain of the cause, a specialist assessment is the safest course of action
Recognising the symptoms of kidney stones
Before diving into the conditions that might mimic kidney stone pain, let’s first establish what kidney stone symptoms typically look like. Common signs include:
- Severe pain in the lower back or side
- Blood in your urine
- Nausea
- Vomiting
- Persistent urge to urinate
This pain often comes in waves and can shift as the stone moves through your urinary tract.
The diagnostic challenge is that several conditions produce near-identical symptoms. Without appropriate imaging and urine testing, symptoms alone are not sufficient to confirm or exclude a kidney stone.
Conditions that can mimic kidney stone pain
1. Urinary Tract Infections (UTIs)
A urinary tract infection can cause pain similar to that of kidney stones, especially when the infection spreads to the kidneys (pyelonephritis). You might experience flank pain, burning during urination, and cloudy or foul-smelling urine. While kidney stones often block urine flow, UTIs result from bacterial growth and inflammation.
In the UK, UTIs are particularly common, with women being more likely to experience them than men. If you’re experiencing symptoms that overlap with kidney stones, such as lower abdominal discomfort and a strong urge to urinate, it’s crucial to rule out a UTI through a urine test.
2. Gallstones
Gallstones might not seem related to kidney stones, but they can cause pain that mimics kidney stone attacks. Located in the gallbladder, these stones lead to sharp pain in the upper abdomen or back. This pain can radiate and feel very similar to kidney stone discomfort. The key difference lies in the location of the pain and its triggers — gallstone pain is often associated with eating fatty foods.
3. Appendicitis
Appendicitis, or inflammation of the appendix, can present with symptoms that overlap with kidney stone pain, particularly in its early stages. Pain often begins near the belly button and shifts to the lower right abdomen, but in some cases, it can radiate to the side or back. Appendicitis is a medical emergency, so if you suspect it, seek immediate care.
4. Musculoskeletal Issues
Back pain from muscle strains, herniated discs, or other musculoskeletal problems can sometimes be mistaken for kidney stone pain. While musculoskeletal pain is more likely to worsen with movement or certain positions, kidney stone pain is constant and unrelated to posture.
5. Irritable Bowel Syndrome (IBS)
IBS affects around one in five people at some point in their lives. Its symptoms include abdominal cramping, bloating, and changes in bowel habits, which can sometimes mimic the discomfort caused by kidney stones. However, IBS pain is typically linked to digestion and bowel movements, rather than urination.
6. Ectopic Pregnancy
For women of childbearing age, an ectopic pregnancy (where a fertilised egg implants outside the uterus) can cause pain similar to kidney stones. This condition often involves sharp, localised pain on one side of the abdomen, along with abnormal vaginal bleeding and dizziness. It’s a medical emergency that requires immediate attention.
7. Ovarian Cysts
Ovarian cysts are fluid-filled sacs on the ovaries that can rupture or twist, leading to severe pain on one side of the lower abdomen or pelvis. This pain may radiate to the back, closely mimicking kidney stone discomfort. Unlike kidney stones, however, ovarian cyst pain is often cyclical, coinciding with the menstrual cycle.
8. Diverticulitis
Diverticulitis, an inflammation or infection of small pouches in the digestive tract, is another condition that can cause abdominal pain resembling kidney stone discomfort. This pain is typically located in the lower left abdomen and may be accompanied by fever and changes in bowel habits.
9. Shingles
Shingles, caused by the reactivation of the chickenpox virus, can cause pain that mimics kidney stones if it occurs on the back or side of the body. The pain often appears before the characteristic rash develops, leading to confusion.
10. Cancer
Certain cancers, such as bladder cancer or kidney cancer, can cause symptoms similar to kidney stones, including pain, blood in the urine, and frequent urination. While these cancers are less common, they should be considered if symptoms persist despite treatment for other conditions. A private urologist can arrange the relevant investigations to rule these out.
When should you seek specialist assessment?
Imaging and urine testing are needed before any confident diagnosis can be made — symptoms alone are insufficient. A CT KUB scan is the gold standard for confirming or excluding a kidney stone. If no stone is found on imaging, investigation should continue towards the other diagnoses listed above. Early specialist assessment means a faster answer and the right treatment from the start.
If you are in London and looking for specialist urology advice, Mr Maneesh Ghei offers private consultations at The Wellington Hospital, St John’s Wood. No GP referral is required and same-week appointments are usually available.
Private Urology Consultations London
Not sure if it’s a kidney stone? Get an accurate diagnosis with same-week availability.
Many conditions mimic kidney stone pain, and getting the right diagnosis quickly matters. Mr Maneesh Ghei, consultant urological surgeon, can assess your symptoms, arrange appropriate scans and give you a clear answer. Most patients are seen within days of enquiry. No GP referral required.
Frequently Asked Questions
How can I tell if it’s a kidney stone or a UTI?
Both can cause flank pain and urinary urgency, but UTIs typically produce burning on urination, cloudy or smelly urine, and are confirmed by a urine test. Kidney stone pain is usually more severe, comes in waves, and often causes visible blood in the urine. A UTI can also develop alongside a kidney stone, so a urine test and imaging are sometimes both needed.
Does kidney stone pain come and go or is it constant?
Kidney stone pain typically comes in waves (renal colic) as the stone moves through the urinary tract. The pain can be extremely severe during a wave and ease between episodes. This pattern is different from many other causes of abdominal pain, which tend to be more constant or related to eating and bowel movements.
Where is kidney stone pain usually felt?
Classic kidney stone pain is felt in the flank — the area between the lower ribs and the hip on one side. It can radiate to the groin, lower abdomen and inner thigh as the stone moves. Pain that stays in one position without moving is less typical of a stone and more suggestive of a musculoskeletal or other cause.
Can appendicitis be mistaken for kidney stone pain?
Yes. In the early stages, appendicitis can cause diffuse abdominal or flank pain that resembles a kidney stone. However, appendicitis pain typically migrates to the lower right abdomen, worsens steadily and is accompanied by fever and nausea. Appendicitis is a medical emergency — if you suspect it, go to A&E immediately.
What tests diagnose kidney stones?
A CT scan of the kidneys, ureters and bladder (CT KUB) is the most accurate test for detecting kidney stones. Ultrasound is also used, particularly to avoid radiation exposure. A urine test can detect blood in the urine, which is present in most cases. Blood tests assess kidney function and help identify any underlying metabolic cause.
When should I see a doctor for suspected kidney stone pain?
See a doctor promptly if you have severe flank or abdominal pain, blood in your urine, fever with pain, vomiting, or if you are unable to pass urine. If you have a known kidney stone that is not passing after 4 to 6 weeks, or if the pain is uncontrolled, a specialist review is advisable. Mr Maneesh Ghei sees patients with kidney stone concerns with same-week availability.
Where can I see a private urologist in London?
Mr Maneesh Ghei is a consultant urological surgeon based at The Wellington Hospital, Platinum Medical Centre, St John’s Wood, London NW8 7JA. He covers kidney infections, kidney stones, urinary problems, and a wide range of urological conditions. Same-week appointments are available with no GP referral needed.
About the Author
Mr Maneesh Ghei, Consultant Urological Surgeon (GMC: 5208045)
Mr Maneesh Ghei is a consultant urological surgeon with NHS and private practice across four London hospitals. He specialises in the diagnosis and management of kidney stones, urinary tract conditions, kidney infections, prostate conditions, and male sexual health. Mr Ghei sees new patients privately with same-week availability. No GP referral is required. Book a private urology consultation.
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