A friend of mine has just text me to say her DS is in hospital with an enlarged heart and looking at at least a week's stay.

They're doing a heap of tests at the moment, that's all the info I have. He's 5 years old and otherwise a healthy happy little boy, sometimes on the "spirited" side, but healthy!

I really feel for her and her DS

Can anyone shed some light on what could possibly be the cause of this??