Right Above My Eyebrow Is A Vertical Dent Type Thing.

right above my eyebrow is a vertical dent type thing. it is not very visible to someone looking at my face, but you can definitely feel it. It's probably an inch or so and somewhat deepish. What could this be from? Is it harmful? this may have nothing to do with it, but when I do get headaches (which is probably 3/4 times a week) they aren't like a headache, they hurt so bad and are painful.