Hi, my son is 10 and has recently been officially diagnosed with Aspergers, even though he has been like it for yrs. He also "ticks" but is too young at the moment to leRn how to manage them. He has numerous obsessions and is a massive chewer I haven't come across Ur little ones issues that you describe, despite having worked with kids and adults on the Autistic spectrum. These kids and adults have so many different traits that affect them but I'm sure someone will have come across it.
Good luck
Annette x
