N04.7

Clinical Causes: Autoimmune diseases, such as systemic lupus erythematosus Vasculitis affecting blood vessels in the kidneys Certain infections, like hepatitis B or C Idiopathic (unknown) causes Drug-induced reactions or adverse effects Other glomerular diseases leading to inflammation and crescent formation

Key Symptoms: Swelling (edema), particularly around the eyes, feet, and abdomen Foamy or frothy urine due to high protein content Unintended weight gain from fluid retention Fatigue and weakness Decreased urine output or dark-colored urine High blood pressure in some cases

Diagnosis Path: Diagnosis involves a combination of medical history, physical examination, laboratory tests, and kidney biopsy. Important diagnostic steps include: - Urinalysis showing high protein levels and possible blood in urine - Blood tests indicating decreased kidney function and abnormal levels of cholesterol, albumin, and waste products - Kidney biopsy revealing the presence of crescent-shaped scars and extracapillary glomerulonephritis, which confirms the diagnosis These tests help determine the underlying cause and guide appropriate management strategies.

Treatment Protocols: Treatment aims to control the underlying inflammation, reduce symptoms, prevent complications, and preserve kidney function. Common approaches include: - Corticosteroids to suppress immune responses - Immunosuppressive medications, such as cyclophosphamide or azathioprine - Blood pressure control using ACE inhibitors or ARBs, which also help reduce protein loss - Diuretics for managing edema - Dietary modifications, including reduced salt and protein intake - Regular monitoring of kidney function and protein levels In some cases, more advanced interventions like plasma exchange or dialysis may be necessary if kidney failure develops. Early diagnosis and intervention are crucial to improve outcomes.