I Have Recently Noticed Ridges On Both Sides Of My

I have recently noticed ridges on both sides of my skull (can be felt under the skin if you move it around). I have had migraines since about age 20, but mostly they seemed to be hormonal or Sun exposure related (I am very fair with light eyes). Since I am now 57, my hair is thinner and I can feel my head is all weird shaped with lumps and what have you. I'm guessing this is normal? I am sort of intelligent (140 IQ) so I'm thinking this had minimal impact on my brain, yes?

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