The web browser you are using will no longer be supported by Cigna.com. To continue accessing the site without interruption, please upgrade your browser to the most recent version.
Kidney Stone

Kidney Stone

Kidney Stone

Kidney stone (magnified)

Kidney stones are made of salts and minerals in the urine that stick together to form small "pebbles." They may form when the normal balance of water, salts, minerals, and other substances found in urine changes. How this balance changes determines the type of kidney stone you have. Most kidney stones are calcium-type-they form when the calcium levels in your urine change.

Current as of: August 11, 2019

Author: Healthwise Staff

E. Gregory Thompson, MD - Internal Medicine

Adam Husney, MD - Family Medicine

Kathleen Romito, MD - Family Medicine

Tushar J Vachharajani, MD, FASN, FACP - Nephrology