I have suffered from kidney stones since my late teens. My dad had also, eventually he passed suffering a long list of complications. Long story but come to find out I was diagnosed with a rare genetic syndrome. The HPT(Hyperparathyroidism) is only the beginning, it's called MEN I (Multiple Endocrine Neoplasia type I). The best specialist to see is an Endocrinologist. MD Anderson treats this condition. I'll gladly answer any questions anyone might have, some patients suffer a long time before they get a clear diagnosis. Thanks.