Kidney Stones: Symptoms, Treatment and Prevention

It usually starts without warning. A sharp, gripping pain begins in one side of the lower back, then travels down towards the groin. It comes in waves, easing for a few minutes and returning with force. Many patients tell us they could not sit still, could not lie down, could not find any position that helped. This is renal colic, the classic pain of a kidney stone on the move, and it is one of the most common reasons for a sudden, urgent clinic visit.

How kidney stone pain typically behaves

The pain follows a fairly recognisable pattern. It begins in the loin, the area between the ribs and the hip, and radiates towards the lower abdomen and groin. In men it can reach the testicle, in women the labia. Nausea and vomiting are common, because the kidney and the gut share nerve pathways. Some people notice pink, red or cola-coloured urine, which is blood from the stone scraping the urinary passage. Burning while passing urine and a frequent urge to go can appear once the stone reaches the lower end of the ureter, near the bladder.

Not every stone announces itself this way. Small stones sometimes pass quietly. Others are discovered by chance on a sonography done for some other reason. Pain does not always match size either. A 4 mm stone squeezing through a narrow ureter can hurt far more than a bigger stone resting quietly inside the kidney.

Why kidney stones form

Urine carries dissolved minerals and salts. When urine becomes too concentrated, these minerals begin to crystallise, and over weeks to months the crystals grow into stones. The most common variety is calcium oxalate. Low fluid intake is the biggest single reason, and our hot climate, long working hours and the habit of ignoring thirst all play their part. A diet heavy in salt, a family history of stones, repeated urinary infections, obesity and certain metabolic problems add to the risk. And once you have formed one stone, the chance of forming another in the following years is real, which is why prevention deserves as much attention as treatment.

Kidney stones treatment: what size honestly tells us

Treatment depends mainly on the size and position of the stone, and on how much trouble it is causing. Many small stones, roughly up to 5 mm, pass on their own with good hydration, pain relief and a short course of medicines that relax the ureter. Your doctor may ask you to filter your urine through a sieve to catch the stone, because analysing it guides prevention later. This watchful approach still needs a follow-up scan, the absence of pain is not proof that the stone has left.

Larger stones, stones stuck in one spot for weeks, or stones causing repeated infection usually need a procedure. Lithotripsy focuses shock waves from outside the body to break the stone into small fragments that then pass in the urine. Ureteroscopy passes a thin scope through the natural urinary passage, so the stone can be removed or broken with a laser, with no cut on the body. Very large stones in the kidney may need keyhole surgery through a small puncture in the back. At Prudent International Health Clinic your evaluation and planning happen in the OPD, and when a procedure is required it is performed at our accredited partner hospitals, with follow-up care back at the clinic.

Preventing kidney stones: what actually works

Prevention advice is often either too vague or too extreme. These steps have good evidence behind them:

• Drink 2.5 to 3 litres of water spread through the day, enough to keep your urine pale yellow. This one habit matters more than everything else combined.
• Moderate your salt. Extra sodium pushes calcium into the urine, so go easy on papad, pickle, packaged namkeen and frequent restaurant meals.
• Do not blanket-ban calcium. Normal dietary calcium from milk, curd and paneer binds oxalate in the gut and actually lowers stone risk. Cutting calcium sharply can backfire.
• If you have had an oxalate stone, take very oxalate-rich foods like large daily servings of spinach in moderation, ideally alongside a calcium-containing food.
• Keep your weight in a healthy range and stay physically active.

If your stone was caught and analysed, prevention can be tailored to its exact type. For people who keep forming stones despite these measures, a 24-hour urine study helps find the specific chemical reason.

Red flags: when a kidney stone becomes an emergency

Most stone episodes are painful but not dangerous. A few situations are different, and they need urgent attention rather than a wait-and-watch approach:

• Stone pain together with fever or chills. This can mean infection trapped behind a blocked ureter, and it can turn serious within hours.
• Very little or no urine output, or stone pain in someone with a single kidney.
• Vomiting so persistent that you cannot keep any fluids down.
• Pain that stays unbearable despite medicines.

For stone pain with fever, please seek same-day medical care. If the person is very unwell, drowsy or too sick to travel by car, call 108 for an ambulance. An infected and obstructed kidney is one of the genuine emergencies in urology, and timely drainage protects both the kidney and the patient's life.

Staying stone-free is a habit, not luck

Kidney stones are common, very treatable and largely preventable. The pain is memorable, but with steady fluids, a lighter hand on salt and timely scans, most people can avoid a repeat episode.

If you have stone pain, blood in the urine, or a stone found on sonography, you can consult our team at Prudent International Health Clinic, DNK Square, Viman Nagar, Pune. We are open all 7 days, 9 AM to 9 PM. Call or WhatsApp +91 70287 22200 to book an appointment.