The causes of renal bleeding are complex and generally include traumatic bleeding of the kidney, as well as bleeding due to structural and functional changes of the kidney itself. Extrarenal hemorrhage may occur as a result of bleeding from the kidney envelope, which is mainly due to local structural damage caused by contusions, i.e. violent injuries. Intrarenal hemorrhage is mostly caused by some hematuria through the renal pelvis to the ureter. For example, urinary stones, urinary tract infections, glomerulonephritis, pyelonephritis, kidney tumors, polycystic kidney tuberculosis, vascular abnormalities, and structural malformations of the kidney may cause bleeding in the kidney and result in hematuria. Renal bleeding with renal colic is often characteristic of ureteral stones in the kidney. In contrast, kidney bleeding with renal masses is most often seen in tumors or congenital polycystic kidneys. Kidney bleeding with skin mucus bleeding is mostly seen in blood disorders such as thrombocytopenic purple epilepsy, aplastic anemia, hemophilia, etc. Therefore, the cause of kidney bleeding is mainly determined by the site of bleeding, whether there is a blood clot, whether there is some pain in the kidney area and medication, skin mucous membrane problems, trauma, past medical history and so on.