Dd2 was gdd for two years until they dx cp. she's still gdd, but that's because of her cp.
If you have a primary dx of ADHD/ asd, then the gdd tag gives little additional info - you would be better off saying 'asd with gross motor difficulties' or whatever best describes him.
Gdd isn't particularly helpful,as a descriptor in this case.
Ouch, we were told that the physio would be the most important person in dd2's life as an infant. They were right.
At 14 mos she wasn't crawling, babbling, moving independently, and was still struggling to swallow due to her tone issues. She also had fairly extreme sensory difficulties. (We were told she was unlikely to walk or talk)
I like an overarching label for ease, but to be at all useful, It has to mean something - and gdd doesn't cut it.
Dd2 will always be disabled, but she has caught up and outstripped her peers by years in many areas at 9. She still has crappy tone. 