Abstract: User interfaces facilitate user interaction with virtual representations of anatomical structures that are displayed on computing systems. The user interfaces demonstrably reflect relative impacts on the anatomical structures based on corresponding conditions and treatments.

Abstract: In one aspect, annotating graphical elements can include displaying a graphical element at a user interface which provides annotation options for selecting areas for annotation, and options for adding highlighting and comments. A user uses the annotation options to select areas of the graphical element for annotation, to select highlighting and user input methods, to and provide comments. After receiving the user input, the graphical elements can be displayed along with the selected annotations. In another aspect, providing information about medical conditions can include presenting a user interface that includes a representation of an anatomical region of the human body. A user can use user-selectable display elements to indicate areas in the anatomical region in which a medical condition is experienced. After receiving the user input, the user can be presented with a selection of medical conditions corresponding to the selected areas, as well as information about medical specialists.