My understanding is that there is a program where you pretty much build up your own database. You enter signs, symptoms, diagnostics, labs, and treatment into the program. You start checking off signs and symptoms and your differential list gets smaller. I'm a medical student and wanted to learn more about this program (if such exists). thank you in advance.
Epocrates Essentials @ Epocrates.com it is fantastic. You can try a trial version. they also have a free drug index download. I am a medical student as well