Have you had him evaluated for sensory processing disorder -- sensory issues? A lot of things you describe sound sensory to me. And, yes, they do sound like elements of anxiety, too. Anxiety and sensory issues overlap and can go hand-in-hand. I'm not surprised you notice similiarities with his autistic brother. All children with autism have sensory issues. But not all children with sensory issues have autism. Occupational therapy and a good sensory diet may reduce a lot of his difficulties.
For background, I have twins with sensory issues. My daughter also has anxiety issues. As far as references, unfortunately, I dont' have any. I've taken my DD to a child psychologist twice for quick consultations and treatment, generally following being traumatized by medical procedures and an allergen procedure.
The take-away lesson in both instances was lots of structure and consistency and firm limits help anxious children.
For background, I have twins with sensory issues. My daughter also has anxiety issues. As far as references, unfortunately, I dont' have any. I've taken my DD to a child psychologist twice for quick consultations and treatment, generally following being traumatized by medical procedures and an allergen procedure.
The take-away lesson in both instances was lots of structure and consistency and firm limits help anxious children.