For the past week or so, I've noticed a hard spot on the center of my tongue
, towards the back. Its slightly more noticeable now than a week ago, and white
in color, about 1/8 inch in diameter and irregularly shaped. I have what I assume is geographic tongue, as I've always had fissures on the tongue surface and it sometimes looks slightly "fuzzy", and sometimes a white coating if I've not brushed well, especially towards the back.