There are many causes of red urine in children, such as congenital polycystic kidney, renal embryonal tumour, haemophilia and leukaemia, which can lead to red urine in children. Parents should not be careless about this condition and should keep an eye on the change in urine colour, seek medical attention and describe it accurately to the doctor to identify the cause. Also some foods can cause it, such as red heart dragon fruit, and need to be identified.
Also, rifampicin and iron supplements can cause red urine.