Tourette Syndrome (TS) is a condition of the nervous system. This condition causes a phenomenon known as tics. Tics are uncontrollable and sudden twitches, movements, or sounds that occur repeatedly. There are two classifications of tics: motor and vocal. Motor tics involve movement of the body such as blinking, shoulder shrugging, or arm jerking. Vocal tics consist of sounds that one makes with their own voice, such as humming, throat clearing, or yelling out words or phrases. Tics can also be either simple or complex, in which simple tics encompass only a few parts of the body, and complex tics involve several parts of the body and can have a pattern. Symptoms typically manifest when a child is 5 to 10 years of age. The first symptoms often occur as motor tics in the neck and head area. Tics can worsen when an individual is stressed or excited and improve when they are in a calm and in a focused state.