Kidney Stones
Overview
Kidney stones are hard deposits made of minerals and salts that form inside your kidneys. Kidney stones can affect any part of your urinary tract — from your kidneys to your bladder. Often, stones form when the urine becomes concentrated, allowing minerals to crystallize and stick together.
Passing kidney stones can be quite painful. Depending on the situation, passing a stone may need nothing more than to take pain medication and drink lots of water to pass it. If the stones are recognized in a timely fashion, they usually cause no permanent damage. However, if stones are large, become lodged in the urinary tract, or are infected, they can result in compilations. In these instances, different treatments may be needed.
Diet, excess body weight, some medical conditions, genetics, certain supplements, and medications are among the many causes of kidney stones. See a more complete list here.
Symptoms
A kidney stone usually will not cause any symptoms until it moves around within a kidney, or passes into the tubes connecting the kidneys and the bladder. If it becomes lodged there, it may block the flow of urine and cause the kidney to swell and the tubes to spasm. At that point, these signs and symptoms may appear:
Severe, sharp pain in the side and back, below the ribs.
Pain that radiates to the lower abdomen and groin.
Pain that comes in waves and fluctuates in intensity.
Pain or burning sensation while urinating.
Other signs and symptoms may include:
Pink, red or brown urine.
Cloudy or foul-smelling urine.
A persistent need to urinate, urinating more often than usual or urinating in small amounts.
Nausea and vomiting.
Fever and chills if an infection is present.
Pain caused by a kidney stone may change as the stone moves through the urinary tract. They may shift to a different location or increase in intensity.
Kidney stone surgery
When is surgery or a procedure needed?
Your urologist may recommend treatment if:
The stone is too large to pass on its own
Pain is severe or ongoing despite medication
Urine flow is blocked by the stone
Infection develops or you have fever with a stone
Kidney function is at risk
Stones keep coming back
Emergency treatment may be needed if you have fever, chills, severe pain, or cannot keep fluids down.
Types of kidney stone procedures
Shock wave lithotripsy (SWL or ESWL)
What it is: Non‑invasive treatment using sound waves to break the stone into tiny pieces
How it’s done:
You lie on a table
X‑ray or ultrasound is used to locate the stone
Shock waves are aimed at the stone from outside the body
Afterwards:
Stone fragments pass in the urine over days to weeks
You may see blood in the urine and feel some discomfort when passing fragments
Best for small to medium stones in the kidney or upper ureter.
Ureteroscopy (URS)
What it is: A thin scope is passed through the urethra and bladder into the ureter or kidney.
How it’s done:
No incision on the skin
The urologist sees the stone with a camera
A laser is used to break the stone, and pieces may be removed, pulverized into small pieces that will pass, or be sucked out with special instruments.
A temporary stent (small soft tube) is often placed in the ureter to keep urine flowing
Afterwards:
Possible burning with urination, urgency, or blood in the urine
Stent may cause pressure or discomfort until it is removed
Percutaneous nephrolithotomy (PCNL)
What it is: Minimally invasive surgery for larger or complex kidney stones
How it’s done:
Performed under general anesthesia
A small incision is made in the back
A nephroscope (small camera) is passed directly into the kidney
Stones are broken and removed through the tract
Afterwards:
Usually a short hospital stay (often 1–3 days)
A tube may temporarily drain the kidney
Open or robotic surgery
Less common today
May be used for very large, complex stones or when other methods are not suitable
Involves a larger incision and longer recovery
When to see a doctor
Call us if you have any signs and symptoms that worry you.
(815) 937-2122
Seek immediate medical attention if you experience:
Pain so severe that you can't sit still or find a comfortable position.
Pain accompanied by nausea and vomiting.
Pain accompanied by fever and chills.
Blood in your urine.
Difficulty passing urine.