My Grandchild is 2 years old and has done the following a few times. it does not happen all the time when he cries, but when he is very upset he begins to cry and then has trouble breathing, at first when he was less than a year old. it lasted only a few seconds, the few times the breathless period is getting longer and longer and has resulted in longer periods of non breathing, the last one he turned blue and collapsed. it seems that during the cry he is unable to breathe, and it is lasting longer each time....is there a breathing disorder that I am not aware of ???....I will let his doctor know on his next visit or is this just a tantrum...