Bleeding disorders - This includes conditions such as hemophilia and von Willebrand's disease.īy itself, hematuria rarely causes symptoms.Sometimes there is no identifiable cause. It can also occur in people with certain auto-immune diseases, systemic lupus erythematosus (lupus or SLE) and vasculitis. Glomerulonephritis is a rare complication of certain viral and bacterial infections (including strep throat). Glomerulonephritis - Glomerulonephritis is a family of illnesses that are characterized by inflammation of the glomeruli, the filtering units of the kidneys.Drugs - Hematuria can be caused by medications, such as blood thinners, including heparin, warfarin ( Coumadin) or aspirin-type medications, penicillins, sulfa-containing drugs and cyclophosphamide (Cytoxan).Trauma - Traumatic injury to any part of the urinary tract - from the kidneys to the urethral opening (the connection between the bladder and the outside world) - can cause hematuria.Exercise - Exercise hematuria is a harmless condition that produces blood in the urine after strenuous exercise.Urinary tract infection - Hematuria can be caused by an infection in any part of the urinary tract, most commonly the bladder (cystitis) or the kidney (pyelonephritis).There are many possible causes of hematuria, including: In this case, the condition is called "microscopic" hematuria. Often, however, the urine appears completely normal because there is not enough blood to cause a color change. If there are enough red cells, the urine can become bright red, pink or cola colored. Hematuria is the presence of red blood cells in the urine.