<prompt> Sustained severe hypertension in children is most commonly suggestive of -Coarctation of aortaPheochromocytomaRenal parenchymatous diseaseDrug induced  <response>: Ans. is c i.e., Renal Parenchymatous disease o Essential hypertension is relatively uncommon 10 in children in contrast to aged persons, o The four most common causes of hypertension in children are:-i Chronic glomerulonephritis most common - 25 ii Chronic pyelonephritis - 10iii Renal artery stenosis - 10iv Essential hypertension - 10 