Hi, my son is hyposensitive. He doesn't have your particular tic, but I think some of the ideas his OT has suggested to me might be useful. First, I had problems with biting my nails and cuticles into adulthood, so I identify with your sense of discomfort about this; obviously, in your case, it's more urgent. Chewing gum is one thing that helps my son with mouthing objects or biting my clothes. Xylitol gum is sugar free, and xylitol helps prevent tooth decay, as well as not having the unpleasant after-taste of other artificial sweeteners.

I also saw pencil topper chew toys for kids with issues with mouthing and chewing behaviors in a catalog. That would be something you could keep on your pen at work. Lots of people have a bad habit of chewing pencils or pens (I remember being mortified when a grocery store clerk called me on it); you probably would need to avoid people seeing you chew on it, and of course, you'd need to keep it away from any surfaces you're working with, but at least it would always be at hand.

You might also want to consider worry beads or fidget toys.

Good luck!

Maggie