The branch of medicine that deals with the diagnosis and (nonsurgical) treatment of diseases of the internal organs (especially in adults)

Internal Medicine is a peer-reviewed open-access medical journal published monthly by the Japanese Society of Internal Medicine.

Internal Medicine, titled Zentralblatt innere Medizin or Innere Medizin in German, formerly titled Kongresszentralblatt für die gesamte Innere Medizin und ihre Grenzgebiete: Offizielles Organ der Deutschen Gesellschaft für Innere Medizin, was a German medical journal with a broad focus on internal medicine, published by Springer, as the official publication of the German Society of Internal Medicine.