Patient's question:
Age description: He was born with thick eyelids, especially when he doesn't prop his head up with a pillow, they become even thicker. His parents do not have puffy eyelids, and no one else in the family does either. I would like to consult if this is related to kidney disease? Which tests should be done? The child has no other symptoms.Doctor's answer:
Hello. Corticosteroids are used in kidney diseases, primarily due to their anti-inflammatory effects. They can reduce exudation during acute inflammation, stabilize lysosomal membranes, decrease fibrin deposition, lower capillary permeability to reduce proteinuria; additionally, they can inhibit proliferative responses in chronic inflammation, reduce fibroblast activity, and alleviate fibrosis caused by tissue repair. The efficacy of corticosteroids in nephrotic syndrome largely depends on the pathological type, with minimal change disease generally considered to have the most certain response.Corticosteroids are available in various formulations:
- Short-acting (half-life 6–12 hours): Hydrocortisone (20mg)
- Intermediate-acting (12–36 hours): Prednisone (5mg), Prednisolone (5mg), Methylprednisolone (4mg), Fluorocortisone (4mg)
- Long-acting (48–72 hours): Dexamethasone (0.75mg), Betamethasone (0.60mg)
Corticosteroids are rapidly absorbed through the gastrointestinal tract, making tablets the most commonly used dosage form. The initial dose is typically 1mg/(kg·d) for adults and 1.5–2mg/(kg·d) for children. After 8 weeks of treatment, responders should continue maintenance therapy, followed by gradual tapering—typically reducing the original dose by 10–20% every 1–2 weeks, with smaller reductions for lower doses and slower tapering. The maintenance dose and duration vary by case, aiming to use the lowest possible dose without clinical symptoms, preferably below 15mg/d. Adjustments may be needed during maintenance therapy due to weight changes, infections, surgery, or pregnancy. Cases unresponsive to 8 weeks of standard treatment require exclusion of efficacy-limiting factors, such as infections, weight gain due to edema, or renal vein thrombosis, with timely diagnosis and management.
Patients with poor oral steroid response, severe edema affecting steroid absorption, systemic diseases (e.g., systemic lupus erythematosus) causing severe nephrotic syndrome, or histopathological findings such as significant interstitial nephritis, diffuse glomerular proliferation, crescent formation, or vascular fibrinoid necrosis may undergo intravenous steroid pulse therapy. Pulse doses typically range from 0.5–1g/d of methylprednisolone for 3–5 days, though clinical experience often favors moderate-to-low doses (240–480mg/d of prednisolone for 3–5 days), followed by oral conversion after 1 week. This approach reduces the risk of side effects like infections while maintaining clinical efficacy. Dexamethasone pulse doses range from 30–70mg/d, but caution is needed to avoid exacerbating edema, sodium retention, and hypertension.
Long-term corticosteroid use can cause numerous side effects, some of which may be severe. Steroids-induced hypercatabolism of proteins can worsen azotemia, increase serum uric acid levels, trigger gout, and accelerate renal function decline. High doses may sometimes exacerbate hypertension or provoke heart failure. Infections during steroid use may be subtle, delaying diagnosis and allowing progression. Chronic steroid use can worsen nephrotic syndrome-related bone disease, even leading to aseptic femoral neck ischemic necrosis.
Many conditions can damage the glomerular capillary filtration membrane, causing nephrotic syndrome. Two-thirds of adult cases and most pediatric cases are primary, including primary glomerulonephritis (acute, chronic, or rapidly progressive). Pathological diagnoses primarily include: minimal change disease, membranous glomerulonephritis (membranous nephropathy), mesangial capillary proliferative nephritis (membranoproliferative nephritis), and focal segmental glomerulosclerosis (Table 1). Secondary causes include infections, drugs (mercury, gold, penicillamine, heroin), toxins, allergies, tumors (lung, stomach, colon, breast, lymphoma), systemic lupus erythematosus, allergic purpura amyloidosis, and diabetes. One-third of adult cases and 10% of pediatric cases are secondary.
I’m glad to meet you in this health network and happy to assist you! If you have any questions, please feel free to ask. I hope my advice can help reduce your psychological stress. Wishing you a speedy recovery!