It’s comforting to see someone else posting about this, as this is one of the main symptoms I have. I had OCD quite a bit as a child, although I didn’t really understand at the time. I chose to just ignore it as I got older and it seemed to just fade away.
But, years later when ms reared it’s head, it came back out of nowhere, I couldn’t even watch someone moving erratically on a television screen but I would feel the same sensations through my own limbs. I sense things left too close to the edge of a table for instance and feel compelled to move them whereas this wasn’t a problem before. It has gone into overdrive very obviously since demyelination is taking place, so I think you’re definitely right that thinning myelin and OCD have a connection. Trying to explain this to nurses and doctors has been quite difficult, as sometimes they don’t seem to get what I’m explaining. They think I’m just reporting heightened ocd, I don’t know if they realise the connection, which seems obvious to me.
I’m taking flaxseed and vit d too, as well as trying follow oms as best I can. I’d be very interested in what else can help rebuild and thicken myelin as well.