Nephrotic

Nephrotic vs. Nephritic Syndrome: Causes and Symptoms

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Your kidneys are essential components of your body’s excretion system. They help remove waste and excess fluid from the body. Each kidney contains microscopic structures called nephrons, which house a glomerulus (plural glomeruli). These glomeruli are responsible for filtering waste from your blood and separating it, which is later converted into urine.

Nephrotic syndrome and nephritic syndrome are two conditions that arise when the glomeruli are not functioning properly. This dysfunction impairs the nephron’s ability to filter waste, which can lead to complications such as edema, kidney failure, and hypertension.

Nephrotic vs. Nephritic Syndrome: Key Differences

What’s Nephrotic Syndrome?

Nephrotic syndrome is a kidney condition that impacts the body’s ability to maintain a proper fluid and protein balance. The condition is characterized by swelling and protein in the urine. Individuals with nephrotic syndrome often experience high cholesterol levels and low blood protein levels.

Causes of Nephrotic Syndrome

Nephrotic syndrome is caused by diseases that make the glomerular filter leak large proteins into the urine. Common causes in adults include:

  • Focal segmental glomerulosclerosis (FSGS)
  • Membranous nephropathy
  • Diabetic kidney disease

In children, minimal change disease is a leading cause. Other potential causes include infections, medications, and systemic illnesses.

Symptoms of Nephrotic Syndrome

Nephrotic syndrome presents with various symptoms that can significantly impact your health. These include:

  • Edema (swelling), particularly in the ankles, feet, and legs
  • Bubbly or foamy urine
  • Loss of appetite
  • Weight gain, especially due to fluid retention
  • Weakness and fatigue
  • Muscle cramps
  • Hypertension (high blood pressure)
  • Blood clots in veins (though less common)
  • High cholesterol levels
  • Reduced urine output
  • Abdominal discomfort or pain

These symptoms may vary from person to person and may worsen over time. If you experience any of these, it is important to seek medical attention.

What is Nephritic Syndrome?

Nephritic syndrome is typically caused by inflammation in the glomeruli, known as glomerulonephritis. Common causes include:

  • Post-infectious glomerulonephritis
  • Lupus nephritis
  • Anti-glomerular basement membrane disease
  • ANCA-associated vasculitis

These conditions damage the glomerular filter, allowing blood and some protein to leak into the urine.

Symptoms of Nephritic Syndrome

Given that nephritic syndrome is caused by glomerular inflammation, it leads to symptoms that may require immediate medical intervention. These symptoms include:

  • Hematuria (blood in your urine)
  • High blood pressure
  • Fatigue
  • Reduced urine output
  • Excess protein in your urine (proteinuria)
  • Abdominal pain, mild to severe
  • Foamy, dark urine
  • High creatinine and urea levels in your blood
  • Swelling around the ankles, feet, hands, and eyes

Although the symptoms of nephritic and nephrotic syndrome can overlap, it is difficult to distinguish between the two based on symptoms alone. A professional healthcare provider’s diagnosis is essential for proper treatment. Early diagnosis significantly improves treatment outcomes.

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