Minimal change disease is a kidney disease that damages the filtering system in a way that causes large amounts of protein to leak into the urine, even though the kidney tissue can look nearly normal on a routine microscope exam.
Minimal change disease affects the glomeruli, the tiny filters in the kidneys, and can lead to large amounts of protein spilling into the urine.
That is why it is called minimal change disease. The main changes are often only seen on electron microscopy.
Many patients develop swelling, low blood albumin, and heavy protein loss in the urine.
The heavy protein loss often drives the symptoms. Some people first notice swelling around the eyes or sudden puffiness in the legs and feet.
Urine testing to measure protein loss
Blood tests for creatinine, eGFR, albumin, and cholesterol
Review of swelling, blood pressure, and symptoms
Kidney biopsy in many adults to confirm the diagnosis
Additional evaluation to look for possible triggers or related conditions
In adults, biopsy is often important because several kidney diseases can cause nephrotic syndrome, and treatment choices depend on the exact diagnosis.
Steroids are often the first treatment because many patients respond well and the urine protein can improve significantly.
Diuretics, sodium reduction, and fluid guidance may help manage edema while the kidneys recover.
ACE inhibitors or ARBs may be used to reduce protein leak and support kidney protection.
Some patients improve and then flare again later, so repeat urine testing and follow-up matter even after symptoms get better.
Urine protein, swelling, weight, and treatment response can change fast. Keeping those trends organized makes follow-up visits more useful.
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