Graves’ disease—which affects about 1% of people in the U.S.—is an autoimmune disorder that occurs when the thyroid gland produces too much thyroid hormone. “Your immune system attacks your thyroid ...

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 ...