My DS is five and a half and on Saturday night frightened us to death by waking up unable to breathe properly. Had to call 999 and went off to hospital, where we stayed for two days. To cut a long story short, they said it was croup but had something called stridor, which is a particular sort of wheeze, and he had to have steroids and oxygen and all sorts of other stuff for breathing diffs. Had a rocketing temperature the second day, even though the stridor was gone, and now just has horrible cough. Have read croup can strike up to six but got the impression it was unusual and unlucky for such a big child (he's physically big for this age too, looks older) to have this so badly. Just wondered if anyone else had any esperience of this...