Kidney stones form when normally dissolved substances in the urine become highly concentrated and solidify. There are several types of kidney stones including calcium, uric acid, cystine, and struvite stones, which are made of different minerals and chemicals. Symptoms of kidney stones include cramping pain, nausea, vomiting, blood in the urine, and difficulty or urgency urinating. Treatment options for kidney stones include medications to relieve pain or alter urine chemistry, lithotripsy to break up large stones with sound waves, and surgical procedures for removing stones.