Annoying tics may be controlled with behavior training  Ask
Doctor K  Dr. Anthony Komaroff  Dr. Anthony Komaroff /
NEA/United Media Published: Monday, January 7, 2013 at 13:26 PM.
Dear Doctor K: My son jerks his neck constantly. Why does he
have this tic? Is it dangerous? What can we do about it?  Dear
Reader: Tics are upsetting — both to the person who has them and
to the people who see them. We like to feel in control of our
world. A sudden, uncontrollable, rapid repetitive movement
(called a motor tic) says we’re not in control. Since your neck
moves only when you want it to, it’s disturbing to see your son
doing something you know you could control. You can, but he
can’t.  Neck jerking is a common tic. Other kinds of tics
include sudden, uncontrollable sounds or vocalizations (vocal
tics), eye blinking, sniffing and throat clearing.  Tics are
thought to be inherited neurological disorders that affect the
body’s motor system. They also can be caused by head injury or
certain drugs, such as stimulants. Man