I know it's difficult to figure out an unusual illness of any kind, but there are far too many cases where physicians insist on one diagnosis even when it does

I know it's difficult to figure out an unusual illness of any kind, but there are far too many cases where physicians insist on one diagnosis even when it does not fit the symptoms. I've seen it first hand with family members, where a cancer diagnosis could've been made far quicker if they hadn't wasted time with useless bullshit that was just treating side effects, not the major symptoms. This baffles me, and makes me very eager for computerized systems which hopefully won't just ignore important facts about the case.