I don't mean direct this specifically at you, but aren't there databases that can look up diseases by symptoms? Are doctors not trained to consult those, maybe after ruling out common causes? Why is forgetting relevant in this context?

I'm asking because I've had frequent encounters with doctors whose process seems to be, literally, "remember if there's anything like the described symptoms that I learned in medical school" which, if they were somewhat older, was probably 30+ years ago.