Since discovering Google image search I have seldom used dermatology books. But a weakness of the search engine is that selection of a term requires a diagnosis or list of possible diagnoses. The map of dermatology tool, a significant enhancement to image search, helps solve that problem. Clicking on a body region or sub region generates a list of descriptive terms which in turn are selected, resulting in a differential diagnosis list. Diagnoses on the list can then be selected for entry into the image search.