Dazy -
I'd look into OverExcitabilities. My son would go through collar chewing phases - I tried to give him acceptable substitutes - and got a few for myself as well. Is chewing gum an option?

For my son it always helped to pull back on the scary TV shows.

Of course, I'll recommend 'Transforming the Difficult Child Workbook.' by Lisa Bravo and Howard Glasser. Really great for those Intense kids learning to handle their strong feelings in health ways.

Love and More Love,
Grinity

Coaching available, at SchoolSuccessSolutions.com