My ds is 10 and has never had this problem before. It happened to him on wed and again last night. Just wondering if anyone can tell me if there could be any reason for this. He is suffering from a tickly cough and first thought this may have caused it to happen. should I be worried about any ifection or anything. Its so out of the ordinary for him. I really didnt expect it to happen again. He doesnt seem to have anything worrying him.