An eight year-old boy is in clinic today with his parents fo…

An eight year-old boy is in clinic today with his parents for a presenting concern of eye blinking and shoulder shrugging for the past 3 months. His teachers have noticed this too. His parents are very concerned about Tourette Syndrome (TS) because Mom’s brother has this diagnosis. Remaining history is non­contributory and his physical exam including neurological exam is normal. In considering the diagnostic criteria and what you know about TS, you conclude: