Pug with Scabs on Tongue

[Wulumuchi]

My male pug has a super long tongue- about 3 inches sticks out of his mouth. He has had a reoccuring scabbing on the right, lower side that usually heals and falls off- the underneath is raw pink skin. The last time we went to the vet for a routine check up, he just so happened to have the scabs and the vet scraped or pulled the scabs off without specifically mentioning anything about them. I'm just wondering if I should be concerned- if this is some sort of potential disease or infection- it's always at the same spot...

Thank you.