my son is 16 years old, multiple kidney stones in each kidney (very small ones, but prevalent), loss of appetite, sour stomach most often, urge to vomit most every morning. not on any medications, however, has taken Accutane for 6-8 months when was 14 years old - family doctor has no idea whats going on, blood tests came back good, however, still awaiting for results from urine that was sent in for diagnosis; any ideas as to what could be going on? has been going on for approx 6-7 months feeling bad. thank you