My Sister, 25 Y/o Female, Is Complaining Of A Painful

My sister, 25 y/o female, is complaining of a painful bump behind her eyebrow bone that is causing headaches. Her description of it is this, "You can't see it. It's underneath the bone. So if your pointer finger is on the top of your eye and you curl your finger to feel under the brow bone. There is a pea sizes bump underneath."