So he’s harassing you about your ADD traits.
Harassing is abuse.
My advise is to leave before you’re brought down to the horrors of being an abused woman.
If you have kids, it’s devastating for them to hear their mother being diminished like that.
Remember the heredity. Your kids inherit the ADHD from you and hearing that it’s just an excuse will scar them for life.
If you can’t turn him around, then just leave.