Speech, why ASD kids don't use the m sound?

[Guest guest]

I just discovered something pretty interesting. My son's choice of

sounds used in words are things like " b " , " d " , " t " , etc. I was saying

these sounds to myself and noticed all of them are sounds that resonate

outside of the head. That sounds funny, but now try saying " m " , there

is a vibration in your head when you say it.

I told my husband about this and he confessed that certain sounds

bothered him too. He said if people stick their lips together and blow

making vibration sounds, he can't stand it because it sends vibrations

all up and down his face.

So I wonder if the way some of our kids speak (or don't speak) is by

choice not to engage in some kind of sensory overload/annoyance. I

think a long time ago (perhaps at age 1) my son was saying " mom " , but I

haven't heard it since then, and he now refuses to say it. He refuses

to make the " m " sound although he is communicating much better than a

year ago, has many more words, and understands directions.

Does this make sense to anyone? I wish I knew how to help him.