Chronic Motor or Vocal Tic Disorder is much more common than its counterpart Tourette Syndrome. Tourette’s sufferers experience both vocal outbursts and involuntary spasm like movements. Those suffering from Chronic Motor or Vocal Tic Disorder only have one of these symptoms, either the vocal or the movements.
Children usually develop tics when they are very young, usually around the age of five. The tics tend to get worse as they get older; however there is normally an improvement once they reach adulthood. When the disorder begins in an older child, then it tends to be a lifelong condition.
Those who suffer from this disorder tend to display symptoms which can include excessive blinking, jerking, grimacing or twitching. They can display sudden movements of their limbs that are uncontrollable. Those who do not have the physical tic make sounds. The sounds they make are similar to grunts, or to the sound made when clearing your throat.
Anxiety, stress, tiredness and excitement can all make the tics worse.
The actual cause of Chronic Motor or Vocal Tic Disorder is not really known, however it is thought that it could be the result of a chemical or physical abnormality in the brain. It can also run in families.