First, changes in urine, including changes in urine composition, urine color, urine volume, and dysuria, mainly including oliguria or frequent urination at night; The change of urine composition is that there is foam in urine, that is, protein; Changes in urine color, that is, red urine or soy sauce urine; Dysuria can lead to urinary retention or pain when urinating.
Second, edema, the most common is edema of eyelids and lower limbs. Third, low back pain, the nature of pain is mainly soreness, and the painful part is mainly the kidney area. Fourth, there will be high blood pressure, which is an easily overlooked problem. In fact, hypertension is also the most common early symptom of kidney disease.