Red and tender after filler injection
Your description of redness and tenderness under your eye, after a nearby filler injection, is concerning for a possible skin infection or cellulitis. If the area is warm along with red and tender that is very suspicious for cellulitis. I would recommend you see your doctor ASAP because a skin infection near the eye can be quite serious and require oral or IV antibiotics.
It it is unlikely seasonal allergies would give the redness and tenderness you describe.
The injections and seasonal allergies may be working together to cause this discomfort.
The injections and seasonal allergies may be working together to cause this discomfort. Treat your seasonal allergies as you normally would and seek a follow up with your injector to be assessed.
Hope this helps.