Long-term abdo pain and diarrhoea in a teen

A girl presents with chronic abdominal pain, bloating and diarrhoea after meals
teen with stomach ache

Charlotte, a 14-year-old girl, presents with longstanding intermittent abdominal pain, bloating and watery diarrhoea.

She reports she has needed to open her bowels urgently after meals, several times a day, for as long as she can remember.