Vermilion border puffiness/swelling/redness/scaly-like texture. Can anyone identify what this might be and what to do? (Photo)

Had this for 5 months now. It's difficult to see, but it's there. I have occasional spots form around the area with puss. It seems like there's a bacterial infection of sorts. It never goes away and I can't get anyone to identify what it is. I have tried almost everything to get rid of it. It reacts to external irritants. E.g. I went to the zoo a few months back and the area around my vermilion border went bright red and felt like it was on fire. Likely due to the fur/hair in the air.