Self-diagnosis of urinary stones The main symptoms of urinary stones are difficulty in urination and pain, so the self-diagnosis of urinary stones should start from these two aspects. Difficulty in urination Stones often block the urethra and cause difficulty in urination, straining to urinate, thin urine line, dripping, and even acute urinary retention. Sometimes hematuria occurs, and when combined with infection, frequent, urgent and painful urination may occur. Painful urination Painful urination may occur in the upper urethra where the stone rests, while painful lower urethra stones may spread to the head of the penis or the perineum. Stones in the penis can be felt as a swelling at the site of pain, and the stones can be expelled when urinating with force. To make a definite diagnosis, you need to visit the urology department of the hospital and have an ultrasound of the urinary system, abdominal plain film, intravenous urography and other tests.