Swollen eyelids, top or bottom, can have many causes, including allergies, infections, and blocked oil glands. While most aren't serious, eyelids can also swell due to a medical condition such as ...

"Puffy eyes typically present as mild swelling of the upper and lower eyelid. They may or may not be accompanied by itchy eyes, watery eyes, and itching of the eyelid skin," says Elyse M.