This type of pathology affects 30-35% of the population, mostly middle-aged, including lithiasis, infectious manifestations, reno-ureteral malformations, postoperative complications, renal failure of various causes. The purpose of the spa is to increase the water load of the kidney (without systemic hyperhydration), increase the renal glomerular circulation, the glomerular filtration rate and decrease the plasma osmolarity with the aim of inducing an osmotic diuresis through the direct effect of the volume of mineral water and indirectly of the H2S in the mineral waters of the resort. In this type of cure only sulphurous oligomineral waters are used in doses, rhythm and quantity adapted to each disease, aiming to achieve a daily diuresis of at least 1.5-2 l.
This also results in a “mechanical flushing” of the urinary tract, microbial sterilisation and normalisation of the mineral composition of the urine.
