hereditary hypophosphatemic rickets

Hereditary hypophosphatemic rickets is a condition caused by a metabolic defect leading to excessive loss of phosphate through the kidneys. This results in low phosphate levels in the blood, which in turn reduces the deposition of calcium phosphate in the bones. Calcium phosphate is essential for bone rigidity, and its deficiency in children causes the characteristic bowed and stunted bones of rickets.1

This condition is a principal cause of rickets in developed nations and is a sex-linked inherited disorder. Treatment involves addressing the underlying metabolic issue and supplementing with phosphate to restore the body's stores.1

Hypophosphatasia, another hereditary disorder, is characterized by very low levels of alkaline phosphatase, an enzyme crucial for bone formation and metabolism. Symptoms can include stunted growth, rickets-like deformities, easy fractures, and early loss of teeth. Prognosis varies, with severe cases being fatal in infancy, while milder cases may improve spontaneously.2