Introduction
Kidney failure is a serious medical condition that occurs when the kidneys lose their ability to effectively filter waste products, excess fluids, and toxins from the blood. Healthy kidneys perform many vital functions, including maintaining fluid balance, regulating blood pressure, balancing electrolytes, and producing hormones that support healthy red blood cell production and bone health.
Kidney failure may develop suddenly as Acute Kidney Injury (AKI) or gradually over several months or years as Chronic Kidney Disease (CKD) progresses to End-Stage Kidney Disease (ESKD). Recognizing the early symptoms and understanding the causes of kidney failure can help patients seek timely medical care and prevent life-threatening complications.
At Prabhakar Bhurke Clinic, our super specialist nephrologist provides comprehensive diagnosis, advanced kidney function evaluation, personalized treatment, dialysis guidance, and kidney transplant counseling for patients with kidney failure.
What Is Kidney Failure?
Kidney failure occurs when the kidneys can no longer perform their essential functions adequately.
The kidneys are responsible for:
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Filtering waste products from the blood
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Removing excess water from the body
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Maintaining electrolyte balance
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Regulating blood pressure
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Producing hormones that stimulate red blood cell production
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Supporting healthy bones through vitamin D activation
When kidney function becomes severely impaired, waste products and fluids accumulate in the body, affecting multiple organs.
Causes of Kidney Failure
Kidney failure can result from many medical conditions.
Chronic Kidney Disease (CKD)
The most common cause of kidney failure is long-standing chronic kidney disease, where kidney function gradually declines over time.
Diabetes
Poorly controlled diabetes damages the kidneys' filtering units and is one of the leading causes of kidney failure worldwide.
High Blood Pressure
Persistent high blood pressure damages the blood vessels supplying the kidneys, reducing their ability to function effectively.
Acute Kidney Injury (AKI)
Sudden kidney failure may develop due to:
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Severe dehydration
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Major infections (sepsis)
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Significant blood loss
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Reduced blood flow to the kidneys
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Certain medications
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Severe allergic reactions
Prompt treatment can often improve kidney function in AKI.
Glomerulonephritis
Inflammation of the kidney's filtering units (glomeruli) can reduce kidney function and lead to kidney failure if untreated.
Polycystic Kidney Disease
This inherited disorder causes multiple fluid-filled cysts to develop in the kidneys, gradually reducing kidney function.
Urinary Tract Obstruction
Blockages caused by kidney stones, enlarged prostate, tumors, or other conditions can impair urine flow and damage the kidneys.
Autoimmune Diseases
Conditions such as lupus can attack kidney tissue and cause progressive kidney damage.
Recurrent Kidney Infections
Repeated kidney infections may lead to permanent scarring and loss of kidney function.
Symptoms of Kidney Failure
Symptoms often develop gradually in chronic kidney disease but may appear suddenly in acute kidney injury.
Common symptoms include:
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Persistent fatigue and weakness
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Swelling of the feet, ankles, legs, hands, or face
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Reduced urine output
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Frequent urination, especially at night
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Foamy urine
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Blood in the urine
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High blood pressure
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Loss of appetite
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Nausea and vomiting
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Persistent itching
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Muscle cramps
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Shortness of breath
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Difficulty concentrating
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Confusion
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Sleep disturbances
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Metallic taste in the mouth
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Unexplained weight loss
These symptoms require prompt evaluation by a nephrologist.
Warning Signs That Require Immediate Medical Attention
Seek urgent medical care if you experience:
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Very little or no urine output
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Severe swelling
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Chest pain
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Difficulty breathing
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Persistent vomiting
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Confusion or altered consciousness
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Severe weakness
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Irregular heartbeat
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High fever with symptoms of kidney infection
These symptoms may indicate advanced kidney failure or a medical emergency.
Who Is at Risk?
People at higher risk include those with:
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Diabetes
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High blood pressure
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Heart disease
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Obesity
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Family history of kidney disease
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Recurrent kidney stones
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Autoimmune disorders
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Recurrent urinary tract infections
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Older age
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Long-term use of certain medications that may affect
