Overview
Kidney stones cause some of the most severe pain in medicine — colicky, wave-like pain from flank to groin as the stone moves. Most under 5 mm pass on their own.
Symptoms to watch for
- Severe one-sided flank pain radiating to groin
- Nausea and vomiting
- Blood in urine
- Urinary urgency and frequency
- Restlessness (can't get comfortable)
What else could this be?
- Kidney infection
- Musculoskeletal back pain
- Ovarian torsion
- Appendicitis (right side)
- Diverticulitis
How it's diagnosed
CT scan without contrast is the gold standard. Ultrasound in pregnancy.
Treatment
Hydration, pain control (NSAIDs, sometimes opioids in ER), tamsulosin to help passage. Larger stones need urology (shock wave lithotripsy or ureteroscopy).
When to book a visit
Go to ER for first episode with severe pain, vomiting, or fever. Book Clindle for follow-up and prevention.
Book online todayFrequently asked
How do I prevent kidney stones?
Drink 2.5–3 L water daily, reduce sodium and animal protein, ensure adequate calcium (through food), and lemon water if uric acid stones.