This is a different kind of arteriosclerosis.This is hyperplastic arteriolosclerosis, which most often appears in the kidney in patients with malignant hypertension.
The risk factors of onset are as follows: undergoing surgeries at a young age, microcornea, nuclear cataract and persistent hyperplastic primary vitreous (PHPV).
Maybe I'm bridging two things that don't belong together, but I'm thinking about the young brain, which of course is hyperplastic, and comparing that to the older brain.