Kidney stones do not cause leg numbness. Kidney stones mainly cause obstruction of the urinary system or spasm of the urinary system, which mainly cause symptoms such as back pain or hematuria, frequent urination, etc., and do not cause numbness of the legs and feet. Leg numbness may be caused by local skin sensory abnormalities or nerve-related irritation in the lower extremities, and can be seen in diseases such as lumbar disc herniation and sciatica, which are recommended to be determined after examination at a specialist. The most common symptom caused by kidney stones is lumbar pain, which can be accompanied by lumbar distress, lumbar distension or hematuria in the naked eye. In case of co-infection, there may be frequent urination, urgent urination or feverish changes. Most patients with kidney stones will have low back pain because they can cause water retention in the kidneys to varying degrees. If a kidney stone rubs against the mucous membrane during strenuous activity, it can cause local mucous membrane rupture, which can lead to hematuria in the naked eye.