Thanks for your question on Health Care Magic. I can understand your concern. Possibility of stress and anxiety related symptoms are more. But better to rule out cardiac diseases like arrhythmia, valvular heart disease etc. Because these diseases are common in young age group and cause similar episodic symptoms. So get done ecg and 2d echo first. If both are normal then no need to worry for cardiac diseases. Your son is mostly having anxiety related symptoms. So better to consult psychiatrist and get done counseling sessions. Try to identify stressor in his life and start working on its solution. He may need anxiolytic drugs too. So ask him to avoid stress and tension, be relax and calm. Don t worry, he will be alright. Hope I have solved your query. Wishing him good health. Thanks.