@henribasi Welcome to connect we are a caring group and try to help . May I ask what kind of Dr, have you seen ? Is it just your PCP ? Have you seen any specialist like a lung Dr,cardiologist, rheumatologist . With your nerve pain and muscles this may be a good Dr to see but it could be so many things . Let us know how your doing . I'm sorry for your pain and discomfort it is hard to not know what the cause is .