@myharley - I never knew anything about this until I noticed these small red patches on my tongue that didn't go away.
I have had decent results swishing around warm salt water in my mouth 2-3 times a day. If I am consistent with this, the patches will usually go away in a few days.
I have also gargled and rinsed my mouth with peroxide, but can't hardly stand having peroxide in my mouth like that. It didn't seem to be any more effective than the salt water, so that is what I use most of the time.
I have noticed a connection between acid reflux and getting a break out of geographic tongue. I don't understand the connection, or what causes it, but know that I usually have both of them at the same time.
I may get this a few times a year so it is not real bothersome, but I would like to figure out what causes it.