I found a dent or depression on my skull. This must have appeared in the past few days. I did not fall or hit my head. I don't feel any pain or anything in the reagion. It is a little to the right close to my hair line. I used to have what it looked like a whitehead in there... But 2 months ago I went to a dermatologist and he used a siringe to remove it. And within a few weeks the little whitead/ siste was gone but yesterday I notice this dent. Now I'm scared.