Kidney stones have a range of symptoms, including diarrhea, as the kidney stone begins to pass from the kidney into the bladder and out through the urethra. However, diarrhea and other symptoms relating to kidney stones are not necessarily specific to kidney stones. Always consult a doctor for a diagnosis.
Small kidney stones may have no symptoms at all; however, when a larger stone is moving from the kidney to the bladder, the pain can get severe and come in waves, according to Steadyhealth.com. WebMD.com adds that kidney stones can cause high levels of pain in the side, back, groin, abdomen or genitals. A person with kidney stones might also experience nausea and vomiting.
Once the Stone has Left the Bladder
Steadyhealth.com notes that a person with kidney stones may experience frequent and painful urination when the stone has passed from the bladder into the ureter. Lack of appetite, diarrhea, constipation, fever, fatigue and excessive perspiration are also signs of kidney stones at this stage. According to Webmd.com, blood in the urine can be a sign of a kidney stone that has stayed in the kidneys or that has moved through the ureters.
Cornellurology.com, Cornell University's Urology website, states that upon examination, a patient with kidney stones may look restless and may be unable to find a position that is comfortable. “The abdomen may be slightly distended, and pain is often elicited by gently tapping on the flank region [the side of the belly],” Cornellurology.com says.