Due to environmental pollution, food safety, lifestyle changes and other factors, in recent years the incidence of urinary stones (urolithiasis, urolithiasis) is on the rise. How do we know if we have stones? First of all, look at the pain we can feel if we have stones: 1, pain. Many people have experienced renal colic, the pain is unbearable. Even if it is a tall and strong young man, the pain is rolling on the ground! An old professor who has been engaged in urology for a lifetime said that after a renal colic, I finally understand the pain of many patients, which is a kind of how difficult to endure the pain! Of course, there are also people who do not have obvious pain, may occasionally feel discomfort in the lower back, this situation should also be checked and treated as soon as possible to avoid irreversible damage to renal function caused by chronic obstruction. 2, hematuria. Many patients do not have obvious pain, the most obvious problem is hematuria after activity. Some of them may not be seen by naked eyes, but need to use microscope to find out the blood; some of them may be very serious, and the urine will be bright red or even have blood clots. This is the body’s red light, should be promptly consulted. 3, nausea, vomiting. Many stone patients to nausea, vomiting, loss of appetite and other gastrointestinal symptoms, thought it was acute gastroenteritis! In the small clinic infusion for several days not good to the hospital examination only to find that there are urinary calculi. This is because the ureter and intestines have a common innervation, the stone caused ureteral spasm after the gastrointestinal tract will also react. Then see what the doctor will be concerned about: 1, medical history. A great medical doctor once said, it is the patient who tells me what disease he has. Visible medical history is very important, must be reported to the doctor in detail and truthfully. For example, in the past have had stones or close relatives have had stones is very critical, these people have a higher incidence of stones. The original genitourinary diseases or anatomical abnormalities are also prone to stones. 2. Physical examination. After listening to your complaint, the doctor will usually check your body. For example, they will knock on your back where the kidneys are located, and many patients with ureteral stones will have obvious knocking pain. If you suspect that you have stones, you can also check yourself or ask a family member to do so, so that you have a good idea of what is going on. 3. Examination or laboratory tests. Doctors usually ask you to go for an ultrasound and a urine test. Ultrasound is the preferred test for urinary stones. Most stones can be detected by ultrasound. However, some stones cannot be seen because of their location, bowel distention, or difficulty holding in urine. Although you can’t see the stones, you will often see the stones blocking the ureter, such as hydronephrosis, ureteral dilatation, etc. These ultrasound manifestations combined with your complaints, urinalysis to see blood can be basically diagnosed is not a stone. To find out the location of the stone, size, degree of obstruction, you can choose to carry out a CT examination of the whole abdomen. 99% of the stones can not escape the eyes of the CT examination. The European Society of Urology has made CT examination the gold standard for stone diagnosis. Through our own feelings, the doctor’s efforts, the examination of the confirmation, basically you can know whether you have a stone!