Will nephritis cause blood in urine?

Nephritis and kidney disease are two different diseases. Nephritis is an abnormal renal function caused by bacterial infection of the kidneys, which affects the kidney's elimination of toxic substances. Therefore, it is recommended that patients with nephritis should receive timely treatment. Nephritis will not cause hematuria in patients, but it will cause fatigue and poor appetite in patients. It is hoped that patients should adjust their diet and pay attention to protecting their kidneys.

The relationship between hematuria and kidney disease

Generally speaking, in the early stages of chronic nephritis, there are only the clinical manifestations mentioned above, and renal function is not greatly affected. Early standardized treatment can effectively control or completely relieve the disease. Otherwise, renal fibrosis will slowly spread to the entire kidney, and renal function will progressively decline, with symptoms such as fatigue, poor appetite, anemia, itchy skin, oliguria, and inability to stabilize.

Patients must undergo laboratory tests first. Only after the examination can the cause of the disease be clear. Urine examination often shows obvious abnormalities. Microscopic examination can reveal glomerular hematuria and polymorphic changes in the red blood cells in the urine. The incidence of hematuria is 70% to 90%, and it is often microscopic hematuria. Urine protein is usually non-selective. Large molecular proteins such as C3 and α2 macroglobulin may appear in the urine. Blood tests show that renal function is mostly normal in the early stages, with a few cases of decreased glomerular filtration rate. Serum IgG levels may decrease slightly, C4 levels may decrease in very rare cases, and IgM or IgG circulating immune complexes may be positive in the blood in some cases. Serum IgA levels were not high, complement C3 was normal, antistreptavidin "O" titers were generally normal, and antinuclear antibodies and rheumatoid factor were negative.

Hematuria is also a characteristic of chronic nephritis. Hematuria can be divided into macroscopic hematuria and microscopic hematuria. Gross hematuria is hematuria that can be seen with the naked eye. The urine is meat-washing water-like, turbid and red. Some children have blood streaks or blood clots in their urine. Microscopic hematuria can only be detected under a microscope, with more than 1 red blood cell count per high-power field of view. Hematuria is the most common symptom in most children with chronic nephritis. Of course, there are many causes of hematuria, and nephritis is just one of them. Therefore, parents should pay extra attention and take timely preventive measures if symptoms are found.

Symptoms of renal hematuria

1. Hematuria: Hematuria can be divided into macroscopic hematuria and microscopic hematuria. Gross hematuria is hematuria that can be seen with the naked eye. The urine is meat-washing water-like, turbid and red. Some children have blood streaks or blood clots in their urine. Microscopic hematuria can only be detected under a microscope, with more than 1 red blood cell count per high-power field of view.

Hematuria is the most common symptom in most patients with chronic nephritis. Of course, there are many causes of hematuria, and nephritis is just one of them. Therefore, when parents find that their children have unexplained hematuria, they should seek medical attention promptly. Perform relevant examinations according to the doctor's advice, and if necessary, perform a urine test to rule out the possibility of renal hematuria. When the urine red blood cells are greater than 8 106/L and the abnormal red blood cells exceed 30%, it is glomerular hematuria. Therefore, the morphology of red blood cells in urine can effectively identify whether it is glomerular hematuria. However, it should be noted that the morphology of red blood cells in urine is also related to the pH and osmotic pressure of urine, so it must be carefully identified to avoid misdiagnosis. Generally, only a small part of the red blood cells in non-glomerular hematuria are deformed, while in hematuria caused by glomerular disease, more than 75% of the red blood cells have different sizes and shapes.

2. Increased foam in urine: Increased foam in urine, mainly smaller bubbles, which are connected to each other and cannot dissipate for a long time, indicating that there is protein in the urine due to high tension. Of course, this symptom is not accurate. If you don't have a certain amount of medical knowledge, you will often ignore it. The easiest way is to go to the hospital to check urine to rule out the possibility of proteinuria. The earliest change in chronic nephritis is urine.

3. Eyelid swelling: The main reason for eyelid swelling in the early stage of chronic nephritis is that the kidney's excretion and regulation of water is damaged, which causes an increase in water and sodium in the child's body. Excess water accumulates in the loose tissue of the body, and the eyelids are where there is more loose tissue. The characteristic of eyelid swelling is that it is more obvious when you wake up in the morning and subsides after activities.