I have a question about an injury that occured to a dear friend of mine who obtained a pneumothorax from a doctor after a series of shots.

I am sorry to hear about your friend.   You state that you have a question but you do not ask it here.  Thus, I am not really able to provide you a sufficient response.  If your friend is interested in pursuing a medical malpractice claim, he/she needs to start contacting local medical malpractice attorneys in his/her area (the state where the harm occurred).  Your friend should probably request all his/her medical records from when he/she believes he/she contracted the pneumothorax and all treatment as a result of such.  Most attorneys are going to want to review the medical records.   Sorry I am not able to provide you a more detailed answer based on your limited post.  Best of luck to your friend. NOTE:  This response is general in nature and should not be considered legal advice.  No attorney-client relationship exists or is formed by this response.