No, Elidel would not cause any facial swelling. I'm not sure what significance the swelling has, if any, but if the face doesn't hurt or have any other symptoms, I would ignore it for a few weeks and see what happens. If it's still bothering you then, have a skin doctor take a look. But in the meantime, don't be self-conscious about it. I can't think of any diseases of any significance that would present with a subtly swollen face.
Take care.
Dr. Rockoff