Kidney stones can cause abdominal distention and pain, but they tend to be located more upward, usually in the lumbar area or upper abdomen, and often do not cause distension in the lower abdomen. Although the involvement pain can radiate to the lower abdomen, groin area, testicles, etc., the involvement pain tends to be more intense and sharp and does not usually manifest as distension. Patients are advised to seek prompt medical attention so that the doctor can determine the exact cause of the lower abdominal distension.