Kidney stones are hard deposits of minerals and salts that form in the kidneys. They vary in size, shape, and composition. Kidney stones are clusters of crystals that form from minerals and other substances in your urinary tract. Most stones pass out of your body in your pee on their own, but they can be very painful as they move through.
Type | Composition | Cause |
---|---|---|
Calcium Oxalate | Calcium + Oxalate | Most common; dehydration, high oxalate foods (spinach, nuts) |
Calcium Phosphate | Calcium + Phosphate | Alkaline urine, metabolic disorders |
Uric Acid | Uric acid | High purine diet (meat, seafood), gout, acidic urine |
Struvite | Magnesium + Ammonium + Phosphate | UTI (especially with Proteus or Klebsiella), more common in women |
Cystine | Cystine (amino acid) | Genetic disorder – cystinuria |
Test | Purpose |
---|---|
Urinalysis | Detects blood, crystals, infection |
Blood tests | Check kidney function, calcium, uric acid levels |
Ultrasound (KUB) | First-line imaging; detects hydronephrosis, large stones |
X-ray KUB | For radiopaque stones (not useful for uric acid) |
CT KUB (non-contrast) | Gold standard – detects all stone types, even small ones |
Stone analysis | After passage/removal, to determine composition |
24-hour urine collection | Identifies metabolic abnormalities causing stones |
Procedure | Indication |
---|---|
ESWL | Stones <2 cm; non-obstructing |
URS | Ureteric or small kidney stones |
PCNL | Large (>2 cm) or complex stones |
Open/laparoscopic surgery | Rare, used in complex or failed cases |
Stent placement | To relieve obstruction, often temporary |
Stone Type | Medical Prevention |
---|---|
Calcium oxalate | Thiazide diuretics, avoid high-oxalate diet, citrate supplements |
Uric acid | Allopurinol, alkalinize urine (potassium citrate) |
Struvite | Antibiotics, complete stone removal |
Cystine | Tiopronin, alkalinization, high fluid intake |
Ayurveda considers kidney stones a manifestation of Vata-Pitta-Kapha imbalance affecting the urinary tract...