Calcium Phosphate Stones
Calcium phosphate stones are a less common form of calcium stone. They constitute an estimated ten percent of all kidney stones and an estimated fifteen percent of all calcium stones. Doctors believe a high urine pH is one of the major causes of calcium phosphate stones. Some individuals with these types of stones have pre-existing kidney conditions such as incomplete renal tubular acidosis, hypocitraturia (low urinary concentrations of citrate), or distal renal tubular acidosis. Patients who take topiramate and other types of carbonic anhydrase inhibitors for the treatment of epilepsy are more likely to develop calcium phosphate stones. Individuals who have migraines are believed to be at an elevated risk of these stones as well. To treat calcium phosphate stones, doctors recommend increasing urinary volume and restricting sodium intake to reduce the amount of calcium excreted through the urine. Supplementation with citrate is advised as well.
Get more details on the different types of kidney stones now.