Quoting Dovahkiin:" What's wrong with it? o_O "
is an inflammatory condition of the tongue
affecting approximately 2% of the population as of 2003,
and 3% of as 2012.
It is characterized by discolored regions of taste buds
or sometimes even cracks in the surface of the tongue. The condition is usually chronic, and frequently manifests after eating any of a range of exacerbating foods, or during times of stress, illness, or hormonal surges (particularly in women just before menstruating).
I've had it since I was a little kid...apparently it can get a lot worse during pregnancy *shrug*