Hi April,
Welcome to my world.
I had leukoplakia (white spots) and dysplasia (red spots) in my tongue since Dec 98. You said you hardly smoked, me too but what about alcohol this can cause it too. Also there is some evidence that Listerene ia a culprit too!
It is precancerous and it needs to be watched closely by an ENT doctor who specialises in this area. My luekoplakia developed into a squamous cell carcinoma which is like a sore that never goes away. Unfortunately for me it developed into something more serious and I had 40% of my tongue removed. I dont want to scare you but this is serious stuff.
If you need any furthter info or feedback I will be happy to give it.
Good luck and god bless
bob