Congenital hyperparathyroidism and rickets: secondary to maternal hypoparathyroidism and vitamin D deficiency

Area of Science:

• Pediatric Endocrinology
• Neonatology
• Nutritional Biochemistry

Background:

• Congenital rickets is a rare condition presenting in newborns.
• Secondary hyperparathyroidism can arise from various underlying causes, including nutritional deficiencies.
• Preterm infants are particularly vulnerable to metabolic bone diseases.

Observation:

• A preterm infant presented with severe secondary hyperparathyroidism and congenital rickets.
• The infant exhibited extensive bone demineralization and rib cage deformation.
• These skeletal abnormalities resulted in fatal respiratory distress.

Findings:

• The severe presentation was linked to a combination of idiopathic hypoparathyroidism in the infant and maternal nutritional vitamin D deficiency.
• This dual etiology exacerbated bone demineralization and skeletal deformities.
• The case highlights the critical role of maternal nutritional status in fetal skeletal development.

Implications:

• This case underscores the importance of assessing maternal vitamin D status during pregnancy, especially in high-risk pregnancies.
• Early diagnosis and management of hypoparathyroidism and vitamin D deficiency are crucial in preterm infants to prevent severe bone disease.
• Understanding combined etiological factors is vital for managing complex neonatal metabolic disorders.