RT Journal Article SR Electronic T1 Polyuria and ‘watery wee’ in a toddler JF BMJ Case Reports FD BMJ Publishing Group Ltd SP bcr2012007831 DO 10.1136/bcr-2012-007831 VO 2012 A1 Jane Ding A1 Leonie Perera YR 2012 UL http://casereports.bmj.com/content/2012/bcr-2012-007831.abstract AB A 2-year-old girl presented with intermittent dysuria. Following triage in paediatric A+E, the nursing staff became concerned with the large sample of colourless urine she produced, which tested positive for leucocytes. She was described as a ‘big drinker’ to the SHO, raising concerns about diabetes insipidus. On detailed questioning it emerged that she had recently drunk a herbal tea preparation (buchu, couchgrass, marshmallow and plantain) to help ‘flush out’ her urinary system. She was advised to stop the tea. She had localised genital irritation and was discharged home with hygiene/barrier advice, pending urine culture results. She represented 2 days later with worsening dysuria and fever. Her urine was of normal colour and tested positive for leucocytes, nitrites and blood, hence she started antibiotics (urine cultures subsequently grew coliforms). Herbal use in children is not uncommon and should be considered as a cause of polyuria.