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Kidney Stones: Causes, Prevention and Laser Treatment

Kidney Stones: Causes, Prevention and Laser Treatment

2026-05-22

Kidney stones are nothing just some hard deposits made from minerals and salts present in our urine. In normal scenarios, these minerals easily dissolve and leave the body through urine without causing any issue. But when dehydration or excess concentration happens in the body then certain minerals start sticking together and form crystals. Over time, these crystals grow into stones.

These stones can be in many sizes. Some tiny stones can easily pass naturally and others become larger and may block the urinary tract, which is when symptoms begin.

This is why timely kidney stone treatment becomes important, especially when the stone starts affecting urine flow or causing severe pain.

Why do kidney stones form?

Well, there is no single reason behind kidney stones but, usually, it is a combination of factors. One of the biggest factor that associate with it is low water intake. When the body stays dehydrated for longer time then our urine becomes more concentrated which make it easier for minerals to form stones in kidney. Apart from dehydration, other common causes include:

  • excessive salt intake
  • diets high in sugar or processed food
  • family history of kidney stones
  • obesity and diabetes
  • certain medications
  • repeated urinary infections

Some people are also naturally more prone to stone formation because of their body chemistry. And once a person develops kidney stones once, the chances of recurrence become higher if preventive steps are not followed.

Symptoms are not always the same

Many people expect severe pain immediately.

But kidney stones do not always behave that way.

Small stones may not cause symptoms at all.

Problems usually begin when the stone moves or blocks the urinary tract.

Common symptoms include:

  • sharp pain in the side or lower back
  • pain while urinating
  • blood in urine
  • nausea or vomiting
  • frequent urge to urinate
  • cloudy or foul-smelling urine

Some patients also develop fever if there is an associated infection. At that stage, immediate kidney stone treatment may be needed to avoid complications.

How kidney stones are diagnosed

Diagnosis is usually straightforward. Doctors may suggest:

  • urine tests
  • blood tests
  • ultrasound or CT scan

These tests help identify:

  • the size of the stone
  • location
  • number of stones
  • whether there is blockage or infection

This information is important because treatment depends heavily on the size and position of the stone.

Not every kidney stone needs surgery. This is something many people misunderstand. If the stone is very small, doctors may advise:

  • increased water intake
  • pain medicines
  • medicines to relax the urinary tract

Many small stones pass naturally through urine.

But larger stones often need medical procedures because they cannot pass on their own. That is where advanced treatments become important.

Laser treatment for kidney stones

Today, laser-based procedures have changed the way stones are treated. One commonly used method is laser lithotripsy. In this procedure, a thin scope is passed through the urinary passage to reach the stone. A laser is then used to break the stone into very tiny fragments, which can pass naturally through urine.

The biggest advantage is precision. The surrounding tissues usually remain protected while the stone is targeted directly. Because there are no large cuts involved, recovery is often faster compared to traditional surgery.

RIRS surgery — a modern approach

Another advanced option used today is RIRS surgery (Retrograde Intrarenal Surgery). This technique is especially useful for stones located deeper inside the kidney. Using a flexible scope and laser technology, doctors are able to reach and treat stones without making external incisions. Many patients prefer RIRS surgery because:

  • hospital stay is usually shorter
  • recovery is smoother
  • pain after the procedure is often less

However, the choice of treatment always depends on the size, location, and hardness of the stone.

Recovery after kidney stone treatment

Recovery varies from person to person.

Some patients return to routine activities within a few days, while others may take slightly longer depending on the procedure performed.

Doctors usually advise:

  • drinking plenty of water
  • avoiding dehydration
  • following dietary guidance
  • regular follow-up scans if needed

One thing patients often ignore after successful kidney stone treatment is prevention. They feel better and return to old habits again.

That is one reason stones tend to recur.

Kidney stone prevention matters more than people think

Treatment removes the stone.

But prevention helps stop future stones from forming.

And honestly, small daily habits make a big difference here. The most important step is staying hydrated.

Apart from that:

  • reduce excess salt intake
  • avoid very high sugar consumption
  • limit processed foods
  • maintain a balanced diet

Doctors may also suggest dietary changes depending on the type of stone a person had previously. Some people wrongly stop calcium completely, but that is not always recommended. Proper dietary guidance matters because prevention is not the same for everyone.

When should you meet a kidney stone specialist?

Many people delay consultation hoping the pain will settle on its own. But if symptoms continue, or if pain becomes severe, it is important to consult a kidney stone specialist early. Delaying treatment can sometimes lead to:

  • infection
  • blockage
  • kidney damage in severe cases

An experienced kidney stone specialist helps not only in treatment, but also in identifying why the stones formed in the first place.

Final thought

Kidney stones are common and experience by many people, but they should not be ignored. Because stone pain can be intense and can also be repeat several times that can easily affect quality of life. Stone pain known to be one of the severe pain one can experience and immediate action is necessary at the time of this pain.

The good thing is that modern treatments like laser lithotripsy and RIRS surgery have made treatment more precise and less invasive for many patients. And addition to that prevention plays an equally important role here. Because in many cases, simple lifestyle changes and timely care can also reduce the chances of stones returning again and again. And sometimes, that long-term prevention matters just as much as the treatment itself.

FAQs

1. How long does it take to pass a kidney stone?

Small kidney stones may pass naturally within a few days to a few weeks. It depends on the size and location of the stone. Larger stones usually do not pass easily and may need proper kidney stone treatment.

2. What do kidney stones feel like?

Most people describe kidney stone pain as very sharp and sudden. The pain usually starts in the side or lower back and may move toward the lower abdomen or groin. Some people also feel burning while urinating or notice blood in the urine.

3. What can I drink or eat to help prevent kidney stones?

The most important thing is drinking enough water throughout the day. Doctors also advise reducing excess salt, sugary drinks, and processed foods. A balanced diet with proper hydration helps lower the chances of stone formation.

4. When should I go to the hospital for a kidney stone?

You should seek medical help if the pain becomes severe, if there is fever, vomiting, difficulty passing urine, or blood in the urine. These signs may indicate blockage or infection and should not be ignored.

5. Can kidney stones come back again after treatment?

Yes, kidney stones can recur if preventive care is not followed. People who have had stones once are more likely to develop them again. Drinking enough water, following dietary advice, and regular follow-up with a kidney stone specialist can help reduce recurrence.

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Dr Midhun Ramesh

Dr Midhun Ramesh

Nephrology