Do you see people having this jerky movement that seems to be more than just occasional? Or even so frequent that you only need to count a few seconds before it comes again?
Don’t laugh at them or be afraid of them because probably they only have this Tourette syndrome. It is a hereditary, involuntary movement that can be classified into Motor Tics (movement/jerks) or Focal Tics (voice/cough-like). The name Tourette came from the founder George Giles Dela Tourette.
There are some differences in the way a patient is affected, and how they lessen the attack. For some these jerks increases if there are people staring or observing him, but for some the more people there is the lesser the jolt as if he gets conscious more thus can control. Some also found out that their concentration affects the jolting or of how focused they are to a certain activity they seem to forget the movement (like for one, he is a painter and his paintings are perfected), or of how relaxed they are.
This is said to be a Neurological disorder that needs medication, and it helps also for them to know that they are not along in this; that he is not a freak nor is he being possessed by the devil.