Orange tree with bark disease

[colordrops]

Hi All, I've got an orange tree in my back yard, and the bark of the trunk has been slowly disappearing over the last couple years. It still seems relatively healthy and bearing fruit, but I'm worried that the progression of whatever this is will kill it. Based on some searching, it seems to be a viral disease, but I can't be sure, as many other conditions seem to match what I'm seeing. I've attached a picture of the trunk. I'd like to know what the problem is, and whether there is a way to cure or at least slow the progression.

thanks, colordrops

[catgrass]

You don't say where you are, but I do know that in Florida and eating it's way west is a citrus disease that the Ag centers are very concerned about. I would contact your state's extension service -usually located wherever your main college for your state is. They could help you.