Hi A.,
Hmmm...seems as if he is giving himself sensory input here for certain, since you mention he 'doesn't mind and he says it "helps him fall asleep", i.e. It may be as simple as a habit he has developed as a coping skill for an underlying symptom such as ringing in the ear, or as proprioceptive input (you said your son has had OT...I am sensing you'd be familiar with the term)...to use as a 'calming tool' for himself..repetitive movement soothes and calms. I have a few ideas you may want to consider based on the 'signs' you mention. Create a new bedtime pattern that includes giving his body all over deep firm pressure. Some ways to do this is through a weighted blanket...perhaps a Grammy could make one if you're so lucky:)?...look online for the proper weight to weight ratio for your child, as I forget. A good alternative to this would be to create a caccoon by having him get inside a child size sleeping bag. Also, there are bed tents which children LOVE to sleep in...a great gift for kids that process sensory information differently. In background, you can try either 'white noise'tapes (online) or one of those Baby Beethoven CDs....anything quiet and soothing, paired with a storybook, perhaps. If your little guy is banging head on back of car seat when driving, I am wondering if there isn't something going on with his inner ears, which is connected to his visual perceptual system, which really perks up when the vehicle is MOVING...shaking of the head is a common way for kiddos to sort of attempt to 'align' their visual sensory information coming IN from their environment...sort of like when you see 'double' sometimes when you move your head just right...kids will shake their heads to get RID of the 'double line' in their visual field caused when they are still and their environment around them isn't. (How does your son process swings and slides and trampolines?) Now, remember I am not diagnosing here!!! I'm just relating to you my personal experiences that have come up over the years of working with kiddos with different sensory motor processing systems as a COTA. Another approach is CST...you'd have to do your own research on this as I am a specialist in this area and would never want you to feel I am soliciting here...its just that it is a very wonderful alternative, and parents can learn simple tecniques for 'calming' easily from a trained CST practitioner. You can ask your pediatrician or your OT about it, and he or she may have knowledge of this holistic approach, as many of the major insurance companies now acknowledge it as 'acceptable'. I wouldn't know. Some do and some don't. Another suggestion is to talk to your pediatrician about consulting an herbalist for a natural herb to address the 'sleep center' of the brain...melatonin I believe it is, but there are others. (Greenwood Herbals' in Limerick Me. is a wonderful resource) Coincidence has it that you are local to me, so feel free to check out my profile should you want to. Good luck! Nz