What is a common symptom of renal calculi?

Lower back pain is indeed a common symptom of renal calculi, also known as kidney stones. As the stones move through the urinary tract, they can cause significant pain, often described as severe and sharp, typically felt in the lower back or sides. This pain can radiate to the abdomen or groin, depending on the location of the stones within the urinary system.

Other symptoms associated with renal calculi may include hematuria (blood in urine), pain during urination, and frequent urges to urinate. While nausea can occur due to pain or other factors related to renal calculi, it is not as characteristic or prevalent a symptom as lower back pain in this context. Constant hunger and skin rashes do not relate directly to renal calculi and are not typical symptoms associated with the condition, making them less relevant in this scenario. Therefore, the option highlighting lower back pain stands out as the most accurate representation of a common symptom associated with kidney stones.