Early hematuria, hematuria is only seen in the early stage of urination, and the lesions are mostly in the urethra;
End-stage hematuria, hematuria at the end of urination, mostly in the triangle of bladder, bladder neck or posterior urethra.
Hematuria occurs in the whole process of urination, and the bleeding site is mostly in bladder, ureter or kidney.
The possible causes of hematuria are as follows:
Inflammation of the urinary system. If hematuria is accompanied by facial and systemic edema, hypertension and other symptoms, it may be acute nephritis; If hematuria is characterized by dysuria and urethral orifice pain at the same time, it is mostly prostatitis.
Cystitis. If hematuria is accompanied by severe frequent urination, urgency and dysuria, it is mostly acute cystitis. The most common symptom of cystitis is hematuria, without any feeling, visible to the naked eye.
Kidney calculi or ureteral calculi. Those who have symptoms of low back pain when urinating blood sometimes have severe paroxysmal low back pain and renal colic, most likely renal and ureteral stones.
Urinary tumor. Hematuria is accompanied by frequent urination, urgency and pain, especially renal tuberculosis. Pain and hematuria with no obvious symptoms over 40 years old may be caused by urinary tumor. I hope it helps you. Good luck!