Nephrology focuses on diagnosing and treating kidney diseases. The kidneys filter waste, balance fluids, regulate blood pressure, and manage acute and chronic conditions.
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Treating glomerular disease is a delicate balancing act. The goal is twofold: stop the active damage (inflammation) and protect the kidney from the long-term consequences of that damage (scarring). Because the causes vary so widely, the treatment is highly personalized. What works for a patient with Minimal Change Disease (steroids) might be completely ineffective for a patient with Diabetic Nephropathy.
Treatment often involves powerful medications that calm the immune system, along with standard heart and blood pressure drugs repurposed to protect the kidneys. It is a long-term commitment. Glomerular diseases are rarely “cured” in a week; they are managed over months and years. Follow-up is critical to ensure the drugs are working and to monitor for side effects. This section details the main pillars of therapy and what life looks like during treatment.
For diseases caused by the immune system attacking the kidney (like lupus nephritis, IgA nephropathy, or FSGS), the primary treatment is to suppress that attack. This involves drugs that lower the immune system’s activity.
Corticosteroids, like prednisone, quickly suppress inflammation, acting as a powerful first line of defense. It functions as a potent fire extinguisher, swiftly eliminating inflammation. High doses are often used initially to stop the attack, followed by a slow taper over months. While effective, steroids have significant side effects like weight gain, mood changes, and bone thinning, so doctors try to minimize their long-term use.
If steroids aren’t enough, or to help patients get off medications, stronger drugs are used. Cyclophosphamide is a powerful drug (originally for chemotherapy) used in severe cases to stop rapid kidney failure. Newer “biologic” drugs like Rituximab are becoming more common. These target specific immune cells (B-cells) to stop them from making the antibodies that attack the kidney. Other common drugs include Mycophenolate Mofetil (CellCept) and Calcineurin Inhibitors (like Tacrolimus). These require careful monitoring of blood levels to ensure they are effective but not toxic.
Even if the disease isn’t autoimmune, protecting the filters from pressure is vital. High blood pressure pounds the delicate glomeruli, accelerating scarring.
Doctors use specific blood pressure medicines: ACE (ending in -pril) or ARBs (ending in -sartan). These drugs serve a dual purpose. They lower systemic blood pressure, but they also specifically relax the exit vessel of the glomerulus. This process lowers the pressure inside the filter itself, which directly reduces protein leakage. These drugs are prescribed even to patients with normal blood pressure because of their kidney-protecting effects.
Protein leakage is toxic to the kidney tubes. The more protein leaks, the faster the kidney scars. Reducing proteinuria is a primary treatment goal.
In addition to ACE inhibitors and ARBs, a new class of drugs called SGLT2 inhibitors (originally for diabetes) has shown remarkable ability to reduce protein loss and slow kidney disease progression in both diabetic and non-diabetic patients. Doctors aim to maintain protein leakage as low as possible, ideally under 500 mg a day, which is associated with better long-term kidney survival.
Diet plays a giant role in managing symptoms and slowing disease.
Salt retains water. For patients with swelling (edema) and high blood pressure, cutting salt is non-negotiable. A low-sodium diet (usually under 2000 mg per day) helps diuretics work better and keeps fluid from building up in the legs and lungs.
If swelling is severe, patients may need to limit their daily fluid intake. This prevents the body from becoming waterlogged when the kidneys can’t excrete enough urine.
In the past, very low protein diets were recommended. Today, doctors usually recommend a moderate protein intake. Eating too much protein puts extra filtration work on the kidneys (hyperfiltration), but eating too little causes malnutrition. Finding the right balance is key, and a renal dietitian is often part of the team.
Glomerular disease causes ripple effects that must be managed.
In rare, severe cases (like Goodpasture’s disease or severe vasculitis), the blood is full of toxic antibodies. Plasmapheresis is a procedure that cleans the blood. A machine removes the patient’s plasma (which holds the antibodies) and replaces it with clean plasma or albumin. This process acts as a bridge to remove the immediate threat while the immunosuppressive drugs take effect.
Treatment requires ongoing attention and cannot be treated as a one-time solution. Regular labs are mandatory.
Doctors monitor the creatinine and eGFR to see if kidney function is stable or declining. They check the albumin-to-creatinine ratio to see if the treatment is successfully plugging the leaks. They also monitor for drug side effects—checking white blood cell counts for infection risk and blood sugar levels for steroid-induced diabetes. Adjustments to medication doses are made frequently based on these numbers.
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Usually, no. Doctors aim to use high doses only for a short “induction” period to calm the disease, then taper the dose down. The goal is to switch to safer, long-term maintenance drugs as soon as possible.
The main risk is infection, as these drugs lower your immune defenses. You might also experience nausea or fatigue. Specific drugs have specific risks (e.g., hair loss or high blood pressure), which your doctor will explain.
Diet cannot cure the disease (it won’t stop the immune attack), but it is essential for managing the symptoms. A low-salt diet makes a massive difference in how much swelling you have.
If first-line treatments fail, doctors try different combinations of immunosuppressants. If the kidneys continue to fail despite all treatment, the focus shifts to preparing for dialysis or kidney transplant.
It is generally safe and recommended to get inactivated vaccines (like the flu shot). However, live vaccines should be avoided while on immunosuppressing drugs. Always check with your nephrologist first.
