I am thinking of taking my hobby of flying to the next level and going the airline route. When a prospective employer preforms a background check will any medical related information show up? I hear the airline background checks are quite thorough, as they should be. The reason I ask is because I am a private person and don't need my medical information "out there". I currently have a 3rd class medical, and should have no problem obtaining a 1st class. I worry that they would come back to me and ask "Why didn't you disclose such and such a visit with a doctor from years ago?"