Suggest Treatment For Heat Stroke And Rhabdomyolysis

My healthy son was having shortness of breath during football and he was sweating a lot, we had several test run and was told that he had a heat stroke and that he had Rhabdomyolysis. This was in Sept. 2014, he did not play any more football for the season. Now he is back in the gym and is experiencing shortness of breath again. He is 17 years old, we had a lung function test done and a echo of his heart - all was normal. We don t know what the next step should be or what kind of doctor we should take him to. Something is causing the shortness of breath