N02.1

Clinical Causes: Focal segmental glomerulosclerosis (FSGS), a scarring disease of the kidney in which parts of some glomeruli are affected. Minimal change disease, which may sometimes present with segmental glomerular lesions. IgA nephropathy (Berger's disease), an immune-related disorder causing blood in urine and glomerular damage. Membranous glomerulonephritis, involving immune deposits in the glomerular basement membrane. Secondary causes such as diabetes mellitus or hypertension leading to glomerular injury. Certain infections, autoimmune diseases, or hereditary conditions that cause immune complexes or damage to the glomeruli. Hyalinosis, which is the accumulation of hyaline material within the glomerular capillaries, leading to dysfunction.

Key Symptoms: Persistent or recurrent blood in the urine (hematuria), often visible as red or tea-colored urine. Possible episodes of dark, cloudy, or foul-smelling urine. Swelling or edema, particularly in the legs, ankles, or around the eyes, due to fluid retention. High blood pressure (hypertension), which can develop as a result of kidney impairment. Proteinuria, or excess protein in the urine, which may be detected through laboratory testing. Fatigue or general feelings of being unwell in some cases. While hematuria is often the primary symptom, other signs depend on the underlying cause.

Diagnosis Path: Diagnosis typically involves a combination of clinical evaluation and laboratory tests. Key steps include: - Urinalysis to detect blood, protein, and other abnormalities. - Blood tests to assess kidney function, such as serum creatinine and estimated glomerular filtration rate (eGFR). - Serum complement levels, if autoimmune causes are suspected. - Imaging studies like ultrasound to evaluate kidney size and structure. - Kidney biopsy to observe specific histopathological changes, such as focal and segmental glomerular lesions, hyalinosis, or sclerosis, confirming the diagnosis. - Additional tests may be performed based on suspected underlying causes, like immune markers or genetic testing.

Treatment Protocols: Management of this condition focuses on controlling inflammation, reducing proteinuria, and slowing disease progression. Common approaches include: - Blood pressure control with medications such as ACE inhibitors or angiotensin receptor blockers (ARBs), which help reduce proteinuria and protect kidney function. - Immunosuppressive therapies, such as corticosteroids or other agents, especially if an immune-mediated cause is identified. - Dietary modifications, including reduced salt intake to manage blood pressure and edema. - Treatment of underlying conditions like diabetes or autoimmune diseases. - Regular monitoring of kidney function and urine findings to track disease progression. - In some cases, patients may require more advanced interventions, including dialysis or kidney transplantation if kidney failure develops. It is essential for individuals with this diagnosis to work closely with a healthcare team for personalized management and follow-up.