A kidney stone is a crystallization of uric acid, calcium or other chemicals that are naturally-occurring in the body. Kidney stones may be caused by dehydration, a family history or sometimes too much of a substance called oxalate that is found in some foods. Kidney stones are very painful, especially when they are expelled by the body through urination. Some kidney stones are very large and must be removed surgically. Symptoms vary among individuals and may not always be present.
Pain in the Torso
Some kidney stones are "silent" because they do not create any symptoms, but this is not always the case. Among people who do feel signs of kidney stones, pain in the trunk or torso of the body is a primary symptom. Cramping pain in the stomach, back or side is common, according to the National Kidney and Urologic Diseases Information Clearinghouse (NKUDIC) and usually indicates that the stone has moved out of the kidney and into the ureter. At times the pain may start suddenly and disappear just as suddenly. Lack of appetite and nausea can accompany the pain.
Groin Pain
The pain of a kidney stone that begins in the stomach or back may travel downward as the stone heads toward the bladder. Both males and females may develop pain in their groins. Men may experience pain in the testicles.
Change in Urinary Habits
People who have kidney stones may notice a change of urinary habits. A persistent urge to urinate appears when the kidney stone has progressed down the ureter toward the bladder. A burning feeling while urinating may also occur. Small amounts of blood may pass along with urine, turning the fluid pink.
Signs of Infection
Sometimes fever and chills are associated with kidney stones. The NKUDIC explains that these symptoms may indicate that the patient has an infection that is accompanying the kidney stones. Immediate medical attention is required.
Abnormal Lab Tests
Blood or urine tests may suggest the presence of kidney stones even if no outward symptoms are displayed. The level of uric acid in the blood or urine may be higher than normal when a person has a kidney stone. Red blood cell levels may also rise. The levels of blood calcium and oxylate may also be higher due to kidney stones.
