Primary hyperoxaluria

Primary hyperoxaluria is a rare, inherited condition, resulting in increased excretion of oxalate, with oxalate stones being common. Hyperoxaluria refers to oxalate derived from dietary sources or that which is secondary to malabsorption. Primary hyperoxaluria, on the other hand, refers to a specific type of hyperoxaluria that is due to a metabolic defect resulting from a heritable genetic defect.