A friend of mine is worried about her 19 month old son who does not talk yet and flaps his hands a lot when excited or upset.
I told her not to worry about autism issue, as this kid points at things all the time, points out things he wants, and is very non-verbally communicative. He 'aaaahs' and 'oooohs' a lot, and sometimes makes consonant sounds, but his babble is still pretty basic. He also shakes his head for 'no'.
I wondered what other mums thought, though, especially mums who have experience of autism. i didn;t want to give my friend dud advice.