My son, 4yrs old i've recently noticed involuntary facial "twitching" and faces. healthy, very advanced for his age. should i be concernd?

Tic Disorders evolve: Over time. His 2 motor tics, facial twitches & moues (faces) can occur alone or as part of a neurodevelopmental disorder (asperger stndrome, adhd, or tourette syndrome). Are his conversational skills & reciprocal social interactions as good as his ability to talk about his favorite topics? Is there a family history of ts, ocd/ anxiety disorders, adhd? The tics won't hurt him; do tell his doctor.