If you haven't done so already, I recommend that you mention this to your neurologist. It is common for children with autism to show unusual facial movements, but it would be worthwhile to mention this to a specialist who would be able to tell you whether this particular movement is any cause for concern.
My son was suspected to have Asperger's at the age of 2, but where we live it was difficult to get the actual diagnosis until he was 5. He was still treated for it w/o the diagnosis. His eyes do that as well, but not a lot. I have only noticed a couple of times. Best advice I can give you is appreciate your son. Autism is not a horrible thing. My son is wonderful. He had early intervention....he started a special ed class at a regular public school at the age of 3....he only went 3 days a week at first and went full time at age 4. He is now 7 and is smarter than most 10 yr olds. He is in 1st grade and is on a 2nd and 3rd grade regular ed academic level without any problems. His teacher feels he could probably get on a 5th grade level without it even being challenging but chooses to try to keep him at the same level as most of the kids his age since it's the social aspect that is most challenging in this case. If the high functioning autism your son has is Asperger's....keep in mind he is hyper sensitive. He hears things louder so he will talk louder ( and oh, he will talk...sometimes way too much....and very proper). He tastes more, so foods are a big issue b/c of texture and flavor ( you don't like too much salt on your food do you?). Remember that what ever you put in his food he will taste at least double what you taste. Loud noises are a problem so if hair cuts are an issue find someone who has silent clippers or buy some yourself and have the hair dresser use those. My son has improved in his ability to handle these situations or maybe he is just becoming accustomed to them, but cutting his nails is still a work out for me. If your son shows signs of Attention Deficit Disorder....that is common....Concerta is the best med for that. Also, any aggression is common in Asperger's kids. My son takes Risperdol at night to help with that. He is just very easily frustrated if things don't go perfectly for him and this also helps him sleep better at night. With the combination of the two....wow, he is a calm, smart, loving little boy that is crazy about his baby sister (they don't tend to be very jealous because they crave less attention and affection, although, my son has never pulled away from me...he has never begged me to hold him, either). He is just cleaner. He hates to have anything messy on him. He also doesn't like to go outside and play much because he is terrified of bugs...all bugs, flies, gnats, etc! But one difference is that he is overly cautious whereas many autistic kids find themselves in dangerous situations because they fail to realize the danger first. Although, he desperately wants to see a tornado up close and personal because.."That would just be so cool, Mamma!" Good Luck with everything!
Thanks, just yesterday he got his eval from the regional center before he turns 3 and they said he seems to be in the pddnos category. My son doesn't mind loud noises, we go camping with the generator on, i use my power tools around him, he is scared are first when he see's them do what they do then he gets curious and come close to see what it does, like remote control cars and stuff. He hates to be indoors to long, he loves being out side playing kicking around a ball or jumping around in the back of my truck bed. He doesn't talk now, but he yells when he doesn't get what he wants, most of all he humms like someone trying to talk with their mouth taped shut. As for the meds, i refuse to give my son meds for anything, that would be my last resort, to every each his own.
Thanks for the 411, first time asking about this life changing event. My wife is on top of it but i'd like to learn a little more since it seems that the relationship is no longer husband and wife and just wife and son.