My toddler does this and she dosent have autism.
My son does this and no signs of autism. I do have adhd myself though and i sometimes get a strange urge to slam my head into things, and I looked it up a while back and remember reading about how it is common for people with adhd to have that urge. I wouldn’t worry about the mental health aspect too much until your kiddo is a little older because sometimes toddler just be doin stuff. (I’m no expert, I may just be saying nonsense)
My daughter does this too, I asked her Dr about it they said it's soothing to her and especially since she's teething it could b helping her with the pain as well
My daughter does this and no she doesn’t have autism. I think it’s one of those normal behaviors around this age.
My son does this sometimes before going to bed. It could be a stim thing.
My son does sounds like this especially when he’s going to sleep, and kicks his feet, he also shows no other signs. I think social media brings a great awareness for autism but a lot of the characteristics are also very normal toddler ones. Toddlers are weird sometimes lol!