Curious about a birthmark

I was born with a birthmark on my scalp, originally as a baby it was a small hole to my brain which scabbed over and remains hypersensitive. I've recently finally got my autism diagnosis at the age of 29. 

I was wondering if anybody else with autism has a similar birthmark on their head.

I also have ptsd and depression but that's more to do with trauma from childhood rather than something i was born with.