<s>[INST] Hey, my 17 year old boyfriend has a really bad concave chest and for a while he has been complaining of chest pain and in may it was so painful that he could not take deep breaths, walk or lay down and now again today its that bad. he said it feels like sharp shooting pains in the middle of his chest... is this serious? and does it have to do with his concave chest? [/INST] Hello! Welcome and thank you for asking on Chat Doctor! I understand your concern and would like to explain that your boyfriends complaints do not seem to be related to any cardiac disorders. A musculoskeletal pain or inflammation could be the cause of all this clinical situation. Coming to this point, I would recommend consulting with his family physician for a physical exam and some tests: -a chest X-ray study and pulmonary function tests- a resting ECG-complete blood count, PCR, ESR for inflammation. Meanwhile, I would recommend taking ibuprofen three times daily for some days. Hope to have been helpful! Kind regards,  </s>