One leaks protein, the other leaks blood. Two childhood kidney diseases that look similar and are opposites.
NephrOtic leaks prOtein. NephrItic leaks blood and causes hypertensIon.
| NEPHROTIC syndrome | ACUTE GLOMERULONEPHRITIS | |
|---|---|---|
| Urine | Massive protein, frothy | Blood — tea or cola colored |
| Edema | Severe, generalized; periorbital on waking, ascites | Mild, periorbital |
| Blood pressure | Normal or low | HIGH |
| Serum albumin | LOW | Normal |
| Cholesterol | High | Normal |
| Preceded by | Often idiopathic | Strep infection 1–3 weeks earlier — throat or skin |
| Age | 2–7 years | 5–12 years |
| Treatment | Steroids, albumin, low salt | Supportive; BP control, fluid limits |
The giveaway history: a child who had a sore throat or impetigo a couple of weeks ago and now has cola-colored urine and high blood pressure has post-streptococcal glomerulonephritis.
Confirmed by raised ASO titre and low complement (C3).
Same time, same scale, same clothing. In nephrotic syndrome it tracks the edema and the response to steroids better than anything else.
Also measure abdominal girth for ascites, and strict input and output.
Steroids must be tapered, never stopped abruptly. And a child on steroids may not mount a fever with infection - any lethargy or abdominal pain needs review.
The complication to watch for is hypertensive encephalopathy - headache, visual changes, seizures. Report a rising blood pressure promptly.
Infants present non-specifically: fever, poor feeding, vomiting, irritability — not dysuria. A febrile infant with no obvious source needs a urine sample.
Teaching: wipe front to back, cotton underwear, avoid bubble baths, empty the bladder fully and often, plenty of fluids.
Recurrent UTIs prompt investigation for vesicoureteral reflux, because repeated pyelonephritis scars the kidney permanently.