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A rare, late sign of advanced kidney failure where urea crystallizes on the skin as a white powdery film — seen only in severely untreated uremia.
Uremic frost appears as fine white crystals of urea deposited on the skin when blood urea reaches extreme levels (typically >200-300 mg/dL) with severe, untreated kidney failure. It was more common in the pre-dialysis era; today it signals dialysis is dangerously overdue or inadequate. It resolves with dialysis. Related skin signs of uremia include pruritus, dryness, and calciphylaxis in the most severe cases.
A toxic condition caused by the accumulation of nitrogenous waste products in the blood due to severe kidney dysfunction, characterized by nausea, fatigue, confusion, and metabolic disturbances.
A medical procedure that filters waste products, excess fluids, and toxins from the blood using a dialysis machine when the kidneys can no longer perform this function adequately.
A waste product of muscle metabolism filtered by the kidneys; serum creatinine levels are used to estimate GFR and monitor kidney function over time.
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