Often, the first sign of hyperoxaluria is a kidney stone. Symptoms of a kidney stone can include:  Severe or sudden back pain Pain in the area below the ribs on the back (flank) that doesn't go away Blood in the urine Frequent urge to urinate Pain when urinating Chills or fever 
often  first sign hyperoxaluria kidney stone  symptoms kidney stone can include:  severe sudden back pain pain area ribs back (flank) doesn't away blood urine frequent urge urinate pain urinating chills fever 
hyperoxaluria