Does geographic tongue eventually clear up or does it never go away?

Yes: I have seen it come and go no known reasons for what it triggers it.

They come and go: They vary in size, shape, and color. They appear in one area, and then move to another area. They come and go or change very quickly in days, weeks, or months and the can last up to a year but they may come back again.

Depends : Depends on the cause.If you are allergic to something it will clear up. Start taking vitamins mainly Folic Acid and b complex.Stay away from acidic foods.

Comes & Goes: Geographic tongue (gt) is a variation of normal. Our taste bus are constantly being replaced. In gt patches of taste buds get replaced at a time, rather than individual ones scattered around. As the taste buds get regenerated the patch goes away and a new one can crop up elsewhere on the tongue. Some studies show that when you are under stress the gt pattern is more likely.

Possibly: Geographic tongue is not "normal", but rather a benign, usually, but not always painless, inflammatory process that alters normal tongue anatomy. It can come and go in its own. It will go away without treatment, but can and often will return. It is not contagious. Treatment is not necessary unless symptoms of burning develop, contact your dentist.