Know the symptoms of the disease in order to treat the symptoms. Kidney stones are a common disease in life, and the most common manifestation of kidney stones is pain. The pain caused by kidney stones can be divided into dull pain and colic. The pain is often located in the lower back and abdomen, most of them are paroxysmal, and can also be constant pain. Some of the pain may only be a soreness and swelling of the lower back, but activity or labor may cause the pain to flare up or worsen. The pain often radiates to the lower abdomen, groin or inner femur, or to the labia in women. During an attack of renal colic, the patient shows a painful expression, curls up in bed, presses the abdomen or waist with both hands, or even rolls over in bed, moaning and groaning. The attack often lasts for several hours, but may be relieved in a few minutes. When the renal colic is severe, the face is pale, the whole body has cold sweat, and even the blood pressure drops, showing a state of deficiency, accompanied by nausea, vomiting, abdominal distension and constipation. During the attack of colic, the urine volume decreases, and after the colic is relieved, there may be polyuria. Hematuria is another major symptom of kidney stones. When painful, it is often accompanied by flesh-eye hematuria or microscopic hematuria, the latter being the most common, and massive flesh-eye hematuria is not uncommon, and the hematuria may worsen after physical activity. Patients with kidney stones may excrete sand and stones in the urine, especially during episodes of pain and hematuria, with sand particles or small stones mixed in the urine. Obstruction or stabbing pain occurs when stones pass through the urethra. The common complications of kidney stones are obstruction and infection, and many cases seek medical attention for symptoms of urinary tract infection. Obstruction can cause hydronephrosis and a mass in the upper abdomen or lower back.