Below is an instruction from Human. Write a response.
    ### Instruction:
    What to do for Kidney Stones in Children ?
    ### Response:
    - A kidney stone is a solid piece of material that forms in a kidney when some substances that are normally found in the urine become highly concentrated.  - Kidney stones occur in infants, children, and teenagers from all races and ethnicities.  - Kidney stones in children are diagnosed using a combination of urine, blood, and imaging tests.
    