Swollen mouth on bta

I have several BTAs and have seen them with swollen mouths b4, but I've got one with swollen mouth that won't go down. It's been almost 2 weeks. I've fed it and it eats fine and hasn't tried to relocate. It's not excreting anything from the mouth either. Water parameters r all wi range.

has anyone experienced nem w swollen mouth for 2 weeks or longer?