My question is about a 17 year old male who is active everyday, he plays basketball, swims,baseball, soccer, tennis and track. He has always been healthy since birth. He has started with some concerns about when he is active like running in gym or playing basketball. He said his throat becomes suddenly dry, then he starts to cough and the feels like his throat is closing up because of the choking sensation he has when he feels he's going to vomit. Any idea what this might be