Steroid treatment, primarily using prednisolone, is a cornerstone of managing nephrotic syndrome. While these medications are powerful tools for stopping protein leakage, they can affect almost every system in the body. In the UK, medical teams use high doses initially to achieve remission, which increases the likelihood of experiencing side effects.
Most side effects are temporary and will gradually disappear as the dose is “tapered” (reduced). However, it is important for patients and families to recognise both the immediate changes and the long-term risks associated with high-dose therapy. Understanding these effects allows for better management at home and ensures you know when to seek urgent advice from your renal team.
What We’ll Discuss in This Article
- Immediate and short-term side effects like appetite and mood changes.
- Long-term risks including bone health and growth.
- How steroids impact the immune system and infection risk.
- Practical tips for managing stomach irritation and sleep.
- The importance of the “Steroid Emergency Card.”
- Warning signs that require urgent medical attention.
Short-term side effects
Many patients notice changes within the first few days or weeks of starting prednisolone. These are typically related to the metabolic and psychological impacts of the medication.
- Increased Appetite and Weight Gain: Steroids often make you feel significantly hungrier. They also cause the body to retain salt and water, which can lead to rapid weight gain and a rounded appearance in the face (often called “moon face”).
- Mood and Behaviour Changes: It is common to feel more emotional, irritable, or restless. Children may experience more frequent tantrums, while adults might feel anxious or “wired.”
- Sleep Disturbances: Insomnia or difficulty falling asleep is a frequent side effect. To help with this, UK doctors usually recommend taking the entire daily dose in the morning.
- Stomach Irritation: Steroids can irritate the stomach lining, causing indigestion or heartburn. Taking the tablets with food is essential to protect the stomach.
Long-term and high-dose risks
If steroids are needed for several months or in repeated courses, your specialist will monitor for more significant health impacts.
- Bone Health: Long-term use can thin the bones (osteoporosis). You may be prescribed Calcium and Vitamin D supplements to help protect your bone density.
- Growth in Children: High-dose steroids can temporarily slow down a child’s growth. Paediatric teams monitor height and weight closely at every clinic visit.
- Raised Blood Sugar: Steroids can make it harder for the body to process sugar, which can lead to “steroid-induced diabetes.” Symptoms include extreme thirst and needing to pee more often.
| Category | Potential Side Effect | Management Tip |
| Digestion | Heartburn / Indigestion | Take with food; use acid-blockers if prescribed |
| Physical | Skin thinning / Easy bruising | Be gentle with skin; avoid trauma |
| Immune | Increased infection risk | Avoid infectious people (e.g., chickenpox) |
| Metabolic | High blood pressure | Reduce salt intake; regular BP checks |
| Psychological | Mood swings / Restlessness | Take dose early in the morning |
Summary
Steroids are highly effective but carry a wide range of side effects, from increased appetite and mood changes to long-term risks like bone thinning. Most short-term effects resolve as the dose is reduced. Managing these involves taking medication in the morning with food, following a low-salt diet, and carrying a Steroid Emergency Card. Monitoring by your renal team is essential to balance the benefits of treatment with these potential risks.
Will steroids make me gain weight?
Increased appetite and fluid retention are very common side effects; following a strict low-salt diet is the most effective way to manage the fluid-related part of this weight gain.
What if the steroids do not work?
If protein leakage continues after eight weeks of high-dose treatment, the condition is termed ‘steroid-resistant’, usually requiring a kidney biopsy and alternative medications like Tacrolimus or Rituximab.
Can I take steroids if I have an infection?
If you develop a high fever or a serious illness while on steroids, you must contact your renal team immediately as steroids can mask worsening symptoms and suppress your immune response.
How does an infection actually cause my kidneys to leak protein?
Infections trigger the immune system to release cytokines which can accidentally target and damage the podocytes in your kidney filters, causing them to change shape and allow protein to escape.
How do diuretics help manage the swelling associated with this condition?
Diuretics, or ‘water tablets’, help the kidneys remove excess salt and water from the body through urine, which reduces the fluid buildup in your tissues and relieves swelling in the legs or face.
Why is blood pressure medication prescribed if my blood pressure is normal?
Certain medications, such as ACE inhibitors, are used to lower the pressure specifically inside the kidney’s filtering units, which physically helps to reduce the amount of protein leaking out.
Authority snapshot
The management of steroid side effects in the UK is guided by the UK Kidney Association and the British Association for Paediatric Nephrology. Dr. Stefan Petrov, a UK-trained physician, notes: “We provide ‘sick day rules’ and steroid cards precisely because the body’s natural response is suppressed; vigilance regarding infections and a slow tapering of the dose are non-negotiable for safety.”
