Which condition can cause renal proteinuria?

Renal proteinuria refers to the presence of excess protein in the urine, which can indicate kidney damage or disease. Each of the conditions noted can lead to renal proteinuria through different mechanisms.

Diabetes Mellitus is associated with diabetic nephropathy, a complication that results from long-term uncontrolled blood sugar levels. Over time, high glucose levels can damage the kidney's filtering units (glomeruli), leading to increased permeability and allowing proteins, especially albumin, to leak into the urine.

Pregnancy can cause renal proteinuria due to a condition known as preeclampsia, which is characterized by increased blood pressure and the presence of protein in the urine. This condition indicates impaired kidney function as a result of changes in the blood flow and filtration dynamics that occur during pregnancy.

Kidney Infection, or pyelonephritis, can also lead to renal proteinuria. The inflammation and damage to the kidney tissue caused by infection may disrupt the normal filtration barrier of the glomeruli, resulting in protein spilling into the urine.

Since all these conditions can independently contribute to renal proteinuria, the correct answer encompasses all of them, illustrating the diverse causes behind this clinical sign.