Generally speaking, a typical clinical manifestation of bladder stones is the sudden interruption of urination. That is, the patient may start to urinate normally, but then suddenly becomes unable to urinate midway through. Urination can resume once the patient changes position. Therefore, this sudden interruption of urination is a classic symptom of bladder stones. Of course, bladder stones can also cause other urinary tract irritation symptoms, such as frequent urination, urgency, pain during urination, and hematuria (blood in urine).