What causes hematuria?
Patient: Hi, My 5 year old daughter has blood in her urine. This has been happening throughout the day. I have been to hospital with her and have provided the doctor with a urine sample which will be tested and back with my local GP on Wednesday. I am just beside myself with worry. The GP said in most cases it would be a urine infection. The waiting is distressing. She is very pale and off her food and also has tonsilitus. Please can you offer any advice on what this may be or what to ask the gp to further investigate? Best regards, Julie. Doctor: Episode of hematuria, which usually starts within a day or two of upper respiratory tract infection like tonsillitis may be seen in disease called IgA nephropathy.Though other more common cause of hematuria  (blood in urine) are urinary tract infections, kidney stones, bleeding disorders etc.Ask your doctor for investigations like urine examination, USG abdomen, KFT, CRAP, ESR etc.to confirm diagnosis.