A kidney stone in the right kidney, measuring 3 millimeters in size, usually does not cause any discomfort if it remains stationary. However, if the stone moves or shifts within the kidney, the patient may experience severe pain in the lower back and abdomen, sometimes accompanied by nausea, vomiting, and symptoms such as frequent, urgent, and painful urination. This condition is clinically referred to as renal colic.Renal colic primarily occurs due to the movement of the stone within the kidney or ureter, leading to ureteral spasms. If these symptoms arise, the patient should visit a local hospital for treatment, which typically involves intravenous administration of anti-inflammatory, antispasmodic, and pain-relieving medications.