What could this be on my tongue?

Question

I've been to the dentist various times and they don't make a big deal out of it? One actually called it the "world tongue" It's just a whitish spot, and I think it changes it's shape and size. From what I remember it was actually a lot larger when I was younger. I'm 23 now. Any treatments or anything to worry about?

P.S. Yeah, I use to bite my tongue a lot when I was little!

Answer 1

geographic tongue, or benign erythema migrans-look it up on the net.its harmless anyway,and not to do with biting your tongue;no treatment known or needed.

Answer 2

Its probably like a birth mark or something. Like you know how dogs have colors on there tongues like that? :] Wait your not a talking dog are you O.o"?