Medicines for Glomerulonephritis

What it is

Glomerulonephritis is a general term for a group of conditions in which the glomeruli — the kidneys' tiny filtering units, which clean the blood and make urine — become inflamed or damaged. When the filters are affected, they may leak blood and protein into the urine, and may filter the blood less effectively, which can affect kidney function and, over time, in some cases lead to chronic kidney disease. Glomerulonephritis can develop suddenly (acute) or gradually (chronic), and can range from mild to serious. There are many different types and causes: some result from the immune system attacking the kidneys (sometimes after an infection, or as part of an autoimmune condition such as lupus), some are linked to other diseases, and in some the cause is not fully known. Symptoms depend on the type and severity and can include blood in the urine (sometimes making it dark or cola-coloured), frothy urine (from protein), swelling (for example of the ankles, face or around the eyes), high blood pressure, and, if kidney function is significantly affected, tiredness and other symptoms; milder cases may cause no symptoms and be found on tests. Because the causes and outlook vary so much, glomerulonephritis is assessed and managed by kidney specialists.

How it is treated

Glomerulonephritis is investigated and managed by a kidney specialist (nephrologist), because identifying the specific type and cause is important for treatment and outlook. Assessment includes urine and blood tests (to check for blood and protein and assess kidney function), blood pressure, tests to look for underlying causes (such as infections or autoimmune conditions), and often a kidney biopsy (taking a small sample of kidney tissue), which is frequently needed to determine the exact type and guide treatment. Treatment depends on the specific type and cause and aims to reduce inflammation, treat any underlying cause, protect the kidneys, and manage complications. It may include: treating an underlying cause (such as an infection or autoimmune condition); medicines to control blood pressure and reduce protein leakage (which protect the kidneys); and, for types driven by the immune system, medicines that reduce immune activity (such as steroids and other immunosuppressants). Managing symptoms and complications (such as swelling and high blood pressure), and general kidney-protective measures, are important, along with ongoing monitoring. The outlook varies widely — some types recover fully, others are controlled long-term, and some can progress. The reassuring message is that glomerulonephritis is a treatable group of conditions managed by specialists, and identifying the type allows targeted treatment to protect kidney function.