kidney stones develop by dehydration, weight loss, exercise and diet, if they are not treated they can grow and just cause more and more pain if you dont get them treated the pain may go away but it will come back believe me i have had them myself and the treatment is absolutly nothing well worth having it doent hurt its just lazer treatment which sounds scary but isnt its just like someone is tapping in the same spot repeadedly for about an hour and thats it.
there are different types of stones but one type is made of calcium. And if there not removed can cause severe back ache and blood in urine and damage to kidneys. i have the lithotripsy done to break up the stones and they put you to sleep and they blast the stones. For some people passing the stone can be painful but i never had any problems with it.
kidney stones are most often caused by to much calcuim in your kidneys and if their not pasted or removed they many something cause pain...it best to get the proper test done to see what your choices are.