Wow you surely know a lot about this child...but as you know we can't give out medical advice. I will just share a few "off topic" things about my own child who has PVL. He also scores above the standards on state testing. He is quite intelligent. He has ADD (not ADHD) which is treated by medication. He also only last year learned to ride a two wheel bike (he was very fearful up until this point of learning how to, despite my attempts to bribe him with $50 to ride LOL!). I think he has a sensory processing disorder due to his prematurity and MANY problems (8 surgeries before the age of two, need I say more). He isn't OCD, but he does chew his nails and would play video games 24/7 if I let him. I would say he also fixates on certain subjects, such as science. He is an overflowing river of knowledge when it comes to the most random of facts. His ADD is managed by a neurologist, and we see a pediatric psychiatrist every two years for testing, and he has an MRI every two years in addition d/t hydrocephalus (no shunt, he had an ETV at the age of 2). He also has a hard time making friends and he does talk nonstop. He just turned 12 last month and he was a 2 lb. 2 oz. 29 weeker. He is a handful but an amazing kid.
Again...no medical advice but thought I would just share with you - more on a mom level here I guess.