Kidney stones are a common condition, but for many people, they come as a sudden and painful surprise. Understanding what kidney stones are, why they form, and how they are treated can help reduce fear and improve outcomes.

This guide is designed to give patients a clear overview of kidney stones—without medical jargon—so you feel better informed and more prepared.

What Are Kidney Stones?

Kidney stones are hard deposits that form inside the kidneys when certain minerals and salts in the urine become concentrated and crystallise.

Over time, these crystals can grow and combine, forming stones of different sizes. Some stones remain small and pass naturally. Others grow larger and may cause pain or blockage.

Stones can form in the kidney itself or move into the ureter, the tube that connects the kidney to the bladder.

Why Do Kidney Stones Form?

Kidney stones usually develop when urine becomes too concentrated. This can happen for several reasons.

Not drinking enough fluids is one of the most common causes. When the body is dehydrated, urine contains higher levels of stone-forming substances.

Diet can also play a role. High salt intake, excessive animal protein, or certain metabolic conditions may increase risk.

Some people are genetically predisposed to stone formation. Others may develop stones due to medical conditions, medications, or repeated urinary infections.

Common Symptoms to Look Out For

Kidney stones do not always cause symptoms, especially when they are small.

When symptoms do occur, they often include severe pain in the side or lower back, pain that comes in waves, or pain that radiates towards the groin.

Other symptoms may include blood in the urine, nausea, vomiting, or a frequent urge to pass urine.

If a stone causes infection or blockage, fever and chills can occur. This requires urgent medical attention.

When Should You Seek Medical Help?

Any sudden, severe, or persistent pain should be assessed by a medical professional.

Blood in the urine should never be ignored, even if pain is mild or absent.

If you develop fever, chills, or feel unwell alongside urinary symptoms, urgent review is essential.

Early assessment helps determine stone size, location, and the safest treatment plan.

“Kidney stones are not just a one-time event for many patients. Understanding why a stone formed is just as important as treating the stone itself.”

— Professor Joe Philip

Can Kidney Stones Be Prevented?

For many patients, the answer is yes.

Staying well hydrated is the single most important preventive step. Producing clear or pale-coloured urine is a good sign.

Dietary advice may include reducing salt intake, balancing calcium consumption, and moderating animal protein.

In patients with recurrent stones, further evaluation can identify specific risk factors and guide personalised prevention plans.

Stone analysis and metabolic assessment are often key to preventing recurrence.

Living With a History of Kidney Stones

Having one kidney stone increases the risk of developing another in the future.

Regular follow-up, lifestyle adjustments, and awareness of early symptoms can significantly reduce complications.

Most importantly, patients should know that kidney stone disease is manageable, and effective treatments are available.

With the right guidance and care, long-term outcomes are very positive