Kidney Stones: Symptoms, Types, and Causes

Kidney Stones: Symptoms, Types, and Causes

Table of Contents

    Kidney stones are hard deposits made of minerals and salts that form inside the kidneys. They can cause severe discomfort, urinary problems, and complications if not treated on time. Understanding kidney stone symptoms, causes, and types helps in early diagnosis, timely treatment, and effective prevention.

    Kidney stones affect both men and women, though kidney stones symptoms in females may sometimes be confused with urinary infections or gynecological pain. This makes awareness even more important.

    What Are Kidney Stones?

    Kidney stones develop when the urine contains high levels of minerals like calcium, oxalate, or uric acid, leading them to crystallize and form hard deposits. These stones can stay in the kidney or move into the urinary tract, causing intense kidney stone pain, especially if they block urine flow.

    Kidney Stone Symptoms

    Symptoms usually appear when a stone starts moving inside the kidney or enters the ureter (the tube connecting the kidney and the bladder). Common kidney stone symptoms include:

    1. Severe Pain

    • Sharp pain in the side, back, or lower abdomen  

    • Pain that comes in waves  

    • Fluctuating intensity of kidney stone pain  

    2. Painful Urination

    A burning or stinging sensation while passing urine.

    3. Blood in Urine

    Urine may look pink, red, or brown.

    4. Frequent Urination

    Feeling the urge to urinate more than usual.

    5. Nausea and Vomiting

    Often due to the intensity of pain.

    6. Cloudy or Foul-Smelling Urine

    Indicates possible infection.

    Kidney Stones Symptoms in Females

    Women may experience:

    • Pelvic pain  

    • Lower abdominal cramps  

    • Pain radiating to the groin or vagina  

    • Symptoms similar to urinary tract infections (UTIs)  

    What Causes Kidney Stones?

    Understanding what causes kidney stones can help reduce the risk of developing them. Major causes include:

    1. Dehydration

    Not drinking enough water concentrates the urine, enabling mineral buildup.

    2. High Salt Intake

    A diet high in sodium increases calcium in urine, leading to stone formation.

    3. High Oxalate Foods

    Spinach, beets, nuts, and chocolate can increase the risk when consumed excessively.

    4. Medical Conditions

    • Hyperparathyroidism  

    • Obesity  

    • Recurrent UTIs  

    • Digestive disorders like Crohn’s disease  

    5. Genetics

    A family history of kidney stones increases the likelihood of developing them.

    6. High Protein Diet

    Red meat and animal protein elevate uric acid levels.

    7. Certain Medications

    Some drugs increase stone-forming minerals in the urine.

    Types of Kidney Stones

    Understanding the types of kidney stones helps in choosing the right treatment and preventive approach.

    1. Calcium Stones (Most Common)

    These include:

    • Calcium oxalate stones  

    • Calcium phosphate stones  

    Often caused by a high oxalate diet or metabolic issues.

    2. Uric Acid Stones

    Formed due to high uric acid levels, often seen in people with:

    • Gout  

    • High animal protein consumption  

    • Diabetes  

    3. Struvite Stones

    Commonly associated with repeated urinary infections. They can grow quickly and become large.

    4. Cystine Stones

    Caused by a rare genetic disorder called cystinuria.

    Kidney Stone Pain Relief

    The intensity of kidney stone pain can be unbearable. Here are options for kidney stone pain relief:

    1. Hydration

    Drinking lots of water helps flush out small stones.

    2. Pain Medications

    OTC pain relievers like ibuprofen or prescribed medications.

    3. Heat Therapy

    Applying a warm heating pad on the back or abdomen.

    4. Medical Procedures

    For larger stones:

    • Shock wave lithotripsy (SWL)  

    • Ureteroscopy  

    • Retrograde Intrarenal Surgery (RIRS)  

    • Percutaneous nephrolithotomy (PCNL)  

    A doctor will determine the best treatment based on stone size and type.

    How to Prevent Kidney Stones

    Prevention is possible with simple lifestyle changes. Here’s how to prevent kidney stones:

    1. Drink Enough Water

    6–8 glasses of water daily helps dilute urine.

    2. Reduce Salt Intake

    Avoid excessive salty snacks, fast foods, and processed foods.

    3. Limit Oxalate-Rich Foods

    Moderate intake of spinach, nuts, tea, and chocolate.

    4. Choose a Balanced Diet

    Include more fruits, vegetables, and whole grains.

    5. Reduce Animal Protein

    Limit red meat, seafood, and poultry if prone to uric acid stones.

    6. Maintain a Healthy Weight

    Obesity increases stone risk.

    7. Monitor Calcium Intake

    Get calcium from natural foods rather than supplements (unless prescribed).

    8. Regular Checkups

    People with recurrent stones should get regular urine tests and scans

    Frequently Asked Questions

    What are the early kidney stone symptoms?

    Early symptoms include sharp pain in the back or side, frequent urination, nausea, and blood in the urine.

    What causes kidney stones?

    Common causes include dehydration, high salt intake, excessive oxalate foods, genetics, and certain medical conditions.

    Are kidney stones symptoms different in females?

    Yes, women may experience pelvic pain, groin pain, and UTI-like symptoms along with typical kidney stone symptoms.

    What are the main types of kidney stones?

    The four types are calcium stones, uric acid stones, struvite stones, and cystine stones.

    How can I get kidney stone pain relief?

    Drink water, take pain medication, use heat therapy, or seek medical procedures like lithotripsy for larger stones.

    How do I prevent kidney stones?

    Stay hydrated, reduce salt and oxalate intake, limit animal protein, and maintain a healthy weight.

    When should I see a doctor for kidney stones?

    Seek immediate help if pain is severe, there is fever, vomiting, or inability to pass urine.

    Verified by:

    Dr. Devendra K. Babbar
    Dr. Devendra K. Babbar
    Senior Consultant - Renal Sciences Robotic Surgery (Urology)

    View Profile

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