(HealthDay News) -- Kidney stones are hard masses that form in the urinary tract, and can cause very painful symptoms if they become stuck and difficult to pass.
Here are common signs of kidney stone formation, courtesy of the University of Maryland Medical Center:
- Persistent pain on one side of the back -- around the waist area -- that may travel to the groin. The pain may subside but return.
- Discomfort that is not alleviated by any change in position.
- Nausea and vomiting.
- Bloody urine.
- Frequent sensation of needing to urinate, or pain or burning while urinating.
- Fever and chills, which could signal an infection that needs a doctor's treatment.