My daughter is 14yrs old and has just become very competitive in swimming. She is ranked 4th in our state in backstroke to give some perspective. Within the last2 months typically after swimming in competition she has started having thee strange episodes. She says first everything sloes down, then she feels like something is blocking her throat, she gets very shaky, and her muscles contract starting with her hands. Often she complains of chest tightness and pain. We have seen 2 pediatric cardiologist, are being treated for sports induced asthma, and seeing a psychologist for possible anxiety attacks. As a mother and nurse for some reason nothing seems to fit the symptoms and so far nothing has helped. I am looking like crazy for answers because my daughter thinks she will die without swimming. Please help!!!!!!!!!!!!!!!!!!