Kidney Stone Symptoms in Women: Signs, Differences & When to Worry
- Do kidney stone symptoms differ in women? Yes – here is how
- Classic kidney stone symptoms in women (with pain location guide)
- Why women are often misdiagnosed with UTI or ovarian cysts
- Kidney stones during pregnancy – special risks and symptoms
- Emergency signs in women – when to go to hospital
- How kidney stones are diagnosed in women (imaging choices)
- Interactive FAQ – 9 common questions
Do kidney stone symptoms differ in women? Yes – here is how
Kidney stones are often thought of as a “man’s disease”, but the incidence in women has been rising steadily. In 2025, women accounted for nearly 45% of first‑time stone formers, up from 25% in 1990. The symptoms are broadly similar, but there are important differences: women often have more atypical pain, more frequent misdiagnosis (UTI, ovarian cyst, endometriosis), and unique risks during pregnancy.
At Vivekananda Hospital, we see many women who have been treated for recurrent UTIs for months before a stone is finally discovered. Understanding the subtle differences can save you from unnecessary antibiotics and delayed treatment.
Classic kidney stone symptoms in women (with pain location guide)
When a stone moves into the ureter, it causes obstruction and spasm. The classic symptom is renal colic – severe, cramping pain that comes in waves. Here is what to look for:
- Flank pain (side of the back): The most common location. Pain starts just below the ribs on the affected side and may radiate to the lower abdomen or groin.
- Lower abdominal pain: In women, stones in the lower ureter often cause pain that feels like severe period cramps. This leads to confusion with gynaecological conditions.
- Pain that travels (radiating): As the stone moves down, pain may shift from flank to lower abdomen to inner thigh/labia.
- Nausea and vomiting: Very common – the nerve that supplies the kidney also supplies the stomach.
- Blood in urine (hematuria): Visible pink/red urine or microscopic blood found on urinalysis.
- Burning with urination: When the stone is near the bladder (ureterovesical junction), it can cause urgency and dysuria, mimicking a UTI.
Pain location by stone position:
- Upper ureter (near kidney): Flank pain, sometimes upper abdomen.
- Mid ureter: Pain radiates to lower abdomen and groin.
- Lower ureter (near bladder): Suprapubic pain, urgency, burning, pain at the labia.
Why women are often misdiagnosed with UTI or ovarian cysts
Women with kidney stones are frequently misdiagnosed, leading to delayed treatment. Common misdiagnoses include:
- Urinary tract infection (UTI): Because stones can cause burning, frequency, and urgency. However, a UTI does not cause severe colicky pain. If your “UTI” does not improve with antibiotics, ask for imaging.
- Ovarian cyst rupture: Lower abdominal pain in women is often attributed to gynaecological causes. A pelvic ultrasound can rule out ovarian pathology but may miss a ureteral stone.
- Endometriosis: Chronic pelvic pain from stones can mimic endometriosis, especially if the stone is non‑obstructing and causes dull pain.
- Appendicitis: Right‑sided stones can mimic appendicitis. A CT scan distinguishes them.
Kidney stones during pregnancy – special risks and symptoms
Kidney stones in pregnancy are challenging because many diagnostic tests and treatments are limited. However, they are not rare – about 1 in 500 to 1 in 1,500 pregnancies. Symptoms are similar but often dismissed as normal pregnancy discomforts.
Key symptoms in pregnancy: Flank pain, hematuria, fever, nausea (hard to distinguish from morning sickness). The pain may be less severe because the ureter is dilated by progesterone.
Risks: Obstruction can lead to pyelonephritis (kidney infection), preterm labour, and sepsis.
Diagnosis: Ultrasound is first‑line (no radiation). MRI without contrast is safe and can detect stones as secondary signs (hydronephrosis). CT is avoided.
Treatment: Small stones are managed conservatively (hydration, pain control). For large or infected stones, ureteroscopy with laser is safe in pregnancy (no radiation, no incisions). Stent placement is also an option.
Emergency signs in women – when to go to hospital
Go to the emergency department at Vivekananda Hospital immediately if you have:
- Fever >38.5°C (101°F) with flank or abdominal pain – possible infected obstructed kidney.
- Inability to urinate for more than 12 hours.
- Pain so severe that you cannot stand or find any comfortable position.
- Vomiting that prevents you from keeping down fluids for 24 hours.
- Heavy bleeding with clots in urine.
- Known solitary kidney or pre‑existing kidney disease.
How kidney stones are diagnosed in women (imaging choices)
At Vivekananda Hospital, we use a step‑wise approach:
- Urinalysis: To check for blood, infection, and crystals.
- Ultrasound (KUB): Radiation‑free, good for hydronephrosis and stones >3mm in the kidney. Misses small ureteral stones.
- Non‑contrast CT (low‑dose): Gold standard for diagnosis, even for small stones. In young women, we use ultra‑low‑dose protocols to minimise radiation.
- MRI (without contrast): For pregnant women or when CT is contraindicated. It does not show stones directly but shows hydronephrosis and the stone as a filling defect.
Interactive FAQ – Kidney stone symptoms in women
Yes. Stones in the lower ureter often cause lower abdominal pain that is very similar to severe menstrual cramps. Many women are misdiagnosed with dysmenorrhea or ovarian cysts.
No. Kidney stones do not cause vaginal bleeding or abnormal discharge. If you have vaginal bleeding with flank pain, you may have a gynaecological issue (ectopic pregnancy, ovarian cyst rupture) that requires separate evaluation.
A stone near the bladder (ureterovesical junction) can irritate the bladder, causing burning, urgency, and frequency – exactly like a UTI. If your culture is negative and symptoms persist, request a CT scan.
Rarely. Some women have “silent” stones that cause vague nausea, but typically pain precedes or accompanies nausea. Isolated nausea without flank pain is unlikely to be a stone.
Not more dangerous, but they are more often misdiagnosed, leading to delays. Women also have higher risks during pregnancy. Otherwise, the complications are similar.
Yes. Pregnancy does not prevent stones, and the physiological changes (dilated ureter, increased calcium excretion) may even increase stone risk. If you have flank pain during pregnancy, do not ignore it – get an ultrasound.
First‑line: conservative (hydration, pain relief). If the stone is causing infection or severe obstruction, ureteroscopy with laser is safe during any trimester. Stent placement is also an option. ESWL and CT are avoided.
Yes. Oestrogen is protective against stones. After menopause, stone risk increases. Hormone replacement therapy may reduce risk slightly, but hydration and diet are more important.
Not directly. However, a stone in the lower ureter can cause referred pain to the pelvic floor, which might be exacerbated by intercourse. If you have persistent pelvic pain, see a urologist.
Disclaimer: Kidney stone symptoms in women are often misdiagnosed. If you have recurrent “UTIs” with negative cultures, severe pain that comes in waves, or pain that does not respond to antibiotics, ask your doctor for imaging. At Vivekananda Hospital, we specialise in accurate diagnosis and treatment of stones in women, including during pregnancy.