Look. When you’ve got hair as tight/curly/kinky as Obama’s, and when it’s cut as short as his is, you can easily put parts in it by brushing it in two different directions.
How do I know this? Damn near everyone in my family has that hair, that’s how.
I can’t tell you how many times my mom re-brushed mine and my brothers’ hair when we were dashing out the door to church, because all us boys did that when we were in a hurry. I can still hear her fuming at us now.
If you grew up in a neighborhood filled with boys with kinky hair (like I did), you would have seen those “scars” millions of times.
Check the hundreds (even thousands) of similar images of Obama online. Even the close-ups. I guarantee you’re not going to find but a handful that show anything that looks like a “scar” in his scalp, let alone, any two which show the identical pattern.
It’s a PART in his hair. Nothing more.
He got those from having your head up you arse for too long !