The duration of stone symptoms varies from patient to patient; some may remain asymptomatic, while others may have discomfort that lasts for days or even months. Common urinary stones today include kidney stones, ureteral stones and bladder stones. Bladder stones are usually painless, but some patients may experience sudden interruptions of urination with pain that is relieved by activities such as running and jumping. Kidney stones are usually painless, but can cause sudden pain in the upper abdomen or lower back after strenuous activity, lasting from a few minutes to a few hours. A small percentage of patients also experience discomfort in the upper abdomen and lower back during periods of inactivity. Ureteral stones present as upper abdominal discomfort during non-episodes and as significant renal colic or ureteral colic during episodes, which can last from minutes to hours, depending on the individual. Some patients may even have upper insidious pain that lasts for months before they are seen by a doctor. The presence of these symptoms should be promptly examined in the urology department and treated aggressively.