> Awful and her Dr said not to worry.

Googling "black hairy tongue" gets you a bunch of the usual suspects (Mayo Clinic, WebMD) with some gnarly pictures, and all insist that it is in fact a benign condition. That's gotta be saying something because it's WebMD's job to convince anxious people they definitely have cancer.

I can see her calling her doctor and being like "Hey doc, my tongue just turned black and I'm feeling really lousy" and the doctor zeroing in on the harmless tongue and nothing else.

Women with heart attacks get blown off all the time.