Epidemiology & Classification Pediatric GHD: Incidence ~1:4,000–1:10,000 live births. Classified as: Congenital: Present at birth; often idiopathic (75%) or associated with structural CNS anomalies (e.g., septo-optic dysplasia), genetic mutations (e.g., GH1, GHRHR, POU1F1, HESX1),…