Get an Ecg and an echo done Check cardiac enzyme Consult with a cardiologist personally Dr Ashish Srivastava General Physician and Clinical Cardiologist

Chest pain hv variety of causes.it can arise from simple cause like gastritis to life threatening conditions like heart attack or aortic dissection..typicality of pain and associated symptoms should b taken into consideration..pain wht ur friends is seems to b atypical.. but need to evaluate to say its non cardiac..get and ECG, 2d echo done, and if required stress test.. most it look ro b gastritis or esophagitis..inflammation and collection in pleural cavity cause pain in chest..if it is increasing with respiration it can b related to musculoskeleton or pleura..