Can Allergies Destroy Your Eye's Shape?

Hi, Since this year, i have a kind of dust allergy. I think i have sometimes a swelling (but a little one) in my eyelids but i'm not pretty sure. Could allergy change my eyes shape? Because they look more droopy since several months, (especially the lower lid) but i'm not sure if i was like that before allergies or not (i checked some photos but it didn't help me). What is the allergies incidence on eyelids shape? i'm 21. Thank you