What is the cause of female urine reddish brown?

Female urine is red, in clinical more common: First, urinary tract infection: frequent micturition, urgency, urinary pain, hematuria, urine routine visible white blood cells, red blood cells, urinary ultrasound without abnormalities. Treatment to anti-infective mainly. Second, urinary stones: pain and hematuria as the main symptoms, hematuria can be microscopic or macroscopic hematuria, imaging examination can be confirmed diagnosis. Large stones often need surgery. Third, urinary tumors: Urothelial tumors are common, sometimes hematuria is the only clinical manifestation, imaging examination can be confirmed diagnosis. Radical resection is the main treatment. IV, renal vascular malformation, strenuous exercise, taking anticoagulant drugs can also cause hematuria.