[OKSooner]

" The lip licking and head nodding is all together a brain thing, or nervous disorder, imho. "

Tardive dyskinesia (I hope I spelled it right) is the term, according to someone I know. It's a symptom of dain bramage from any of several causes - at least that's what I'm told by someone who would know.

[RitaOK]

Perhaps related to the fall and the head/eye damage, then?

I know the aged often start to leave their mouth open more and also flick the tongue out and back in, with some frequency.