One in 10 Americans will develop a kidney stone in their lifetime, but physicians report a steady increase in cases among young people, particularly teenage girls.

Related: Doctors Give Tips To Avoid Kidney Stones During Summer Season

For Oklahoma high school junior Avery Kiehl, the problem began at age 15.

"All of a sudden, I started feeling like a sharp pain," Kiehl said. Kiehl's mother recalled finding her “just writhing in pain” before doctors diagnosed her with a kidney stone.

What her family hoped was a one-time ordeal returned a year later, during finals week at school. “I kind of knew it right away because there’s nothing really like that pain,” Avery said. A recent ultrasound revealed yet another kidney stone.

Doctors point to diet as a possible factor

Doctors say 30% to

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