Hi,
I'm a nursing student going into my senior year, but right now I'm off for the remainder of the summer, but working on Med/Surge Unit at a major hospital. I've noticed that when the RN's or LPN's are caring for a patient who has a disease that is rare or that they haven't learned yet they look it up online on the hospitals medical reference pages or go to
www.CDC.com. It would be too difficult to learn every single disease there is known to man. I recommend learning about the most common ones and then reference the ones you happen to come across and are unsure about. Hope that helps!!!!!