1 in 80 now (UK autism rates); although my sticker on my window says 1 in 100 (depends which age group you count!)
interested in spasms pagwatch- ds1 often goes into spasm- I might bore you with my video of it- trying to work out what it is, and never seen another child with it. Pead doesn't know (have showed her); doesn't think seizures- although I've since come across a paper on catatonia in autism which can include repetitive spasms apparently, sounded similar- they can get stuck in these movements- which he does. He kind of arches his back and jerks backwards whilst kneeling up. It doesn't seem fully in his control. I can say sit down and he will for a few seconds but then returns to it- he doesn't seem to like it though.
DS1 also has verbal and oral dyspraxia- he is vocalising a lot atm- telling me everything (everytime we drive past somewhere he's ever been even if only once he points at it and starts vocalising) but everything is "eh eh eh eh eh eh eh". I have to say "oh yes that's where we saw....x" if I get the WRONG event then god help me. Unfortunately his memory is better than mine.
I tried a little experiment with him earlier. I was thinking of all the animal sounds he used to have (had the whole repertoire) so I asked him "what does an X say" he used to answer correctly- everything was "eh" so I gave him the sound to see if he could copy any of them. Basically no. Moo was mmm so close, ssss - he just blew through his lips- like he was trying to whistle. The others were all 'eh".
Certainly we had no reason to suspect verbal dyspraxia when younger either- he had a wide range of sounds before his regresssion. He sounds continued to decrease for a long time. So I have a recording of him singing when he was under 2 (twinkle tinwkle) in one of those teddy bear factory bears- present for dh. The words are not clear (this was after the regression started) but there are some consonants. Also counting. He used to count and the numbers were recognisable- now they're not at all.
Weird isn't it?
BTW I think the fact that your son had 'no' as a word really demonstrates he was developing normally. DS1 has never had a functional no (still doesn't)- we're trying to teach yes/no- but not getting anywhere. ds1 was younger when he regressed and hadn't got past early nouns/animal noises etc - I know from watching my other children how important (and useful) no is as a word- and how utterly 'normal' iykwim.