What Is a Kidney Stone?

Kidney stones are hard deposits made of minerals and salts that form inside the kidneys. They vary in size and can cause significant discomfort as they pass
through the urinary tract. Stones develop when urine becomes concentrated, allowing minerals to crystallize and stick together. Proper hydration is essential to prevent
their formation.

Symptoms of Kidney Stones


The symptoms of kidney stones can range from mild to severe, depending on their size and location. Common symptoms include:
– Severe pain that begins in the back or side and radiates to the lower abdomen or groin.
– Blood in the urine, which may appear pink, red, or brown.
– Frequent and urgent need to urinate, often accompanied by small amounts of urine.
– Pain or burning sensation during urination.
– Cloudy or foul-smelling urine.
– Nausea and vomiting, especially if the pain is intense.
– Fever and chills if an infection is present.

Causes of Kidney Stones

Kidney stones can form due to various factors, including dehydration, dietary choices, genetic predisposition, and certain medical conditions. Common causes include:
– Insufficient fluid intake leading to concentrated urine.
– High dietary intake of oxalate-rich foods such as chocolate, nuts, and certain leafy greens.
– Excessive consumption of salt or animal proteins.
– Medical conditions like hypercalciuria, hyperoxaluria, and urinary tract infections.
– Use of certain medications, such as diuretics and antacids.

Types of Kidney Stones

Kidney stones are classified based on their composition:
– Calcium Oxalate Stones: The most common type, caused by high oxalate intake and low fluid levels.
– Calcium Phosphate Stones: Linked to conditions that result in alkaline urine.
– Struvite Stones: Often associated with urinary tract infections.
– Uric Acid Stones: Formed in acidic urine, often due to high purine intake from foods like meat and seafood.
– Cystine Stones: Rare stones caused by the genetic disorder cystinuria.

Diagnosis of Kidney Stones


To diagnose kidney stones, a combination of medical history, physical examinations, and imaging tests are used. Common diagnostic methods include:
– Non-Contrast CT Scans to determine the size and location of stones.
– Ultrasound for a non-invasive imaging option.
– Urinalysis to check for blood or crystals in the urine.
– Blood tests to evaluate kidney function and detect abnormalities.
– 24-hour urine collection to identify factors contributing to stone formation.

Treatment Options for Kidney Stones

The treatment for kidney stones depends on their size, type, and the severity of symptoms. Options include:
– Pain management using over-the-counter medications.
– Hydration to flush out smaller stones.
– Medical Expulsion Therapy (MET) to relax ureter muscles for easier stone passage.
– Extracorporeal Shock Wave Lithotripsy (ESWL) to break stones into smaller pieces.
– Ureteroscopy and laser treatment for stones in the ureter or kidney.
– Percutaneous Nephrolithotomy (PCNL) for larger stones requiring surgical intervention.
– Dietary changes to prevent recurrence, tailored to the type of stones.