Background: Urolithiasis in association with idiopathic hypercalciuria (IHC) plus idiopathic hyperuricosuria (IHU) has been reported in older children and adult patients only. IHU plus IHC in association with progressive infantile bilateral renal stone disease has not been previously reported during the first year of life. Aim: The aim of this paper is to report the novel association of IHU, IHC and progressive infantile bilateral renal stone disease and also to report our therapeutic approach for this new association, combining traditional treatments of hyperuricosuria (HU) and hypercalciuria (HC) with recently used essential oil terpenes in the management of childhood and infantile urolithiasis. Patients & methods: An 8.5-month old boy was referred with bilateral multiple stone disease. He initially presented with excessive crying and irritability since early infancy. The first renal stone was detected using ultrasound and intravenous pyelogram (IVP) at the age of 4 months. On referral, he showed signs ...