Tic
Simple motor tics are typically sudden, brief, meaningless movements that usually involve only one group of muscles, such as eye blinking, head jerking, or shoulder shrugging. Motor tics can be of an endless variety and may include such movements as hand clapping, neck stretching, mouth movements, head, arm or leg jerks, and facial grimacing.
Tic disorder
In the fourth revision of the DSM (DSM-IV-TR), tic disorders were classified as follows:DSM-5 was published in 2013, updating DSM-IV-TR, which was published in 2000. The following changes were made:The fifth revision of the "Diagnostic and Statistical Manual of Mental Disorders" (DSM-5), published in May 2013, classifies Tourette's and tic disorders as motor disorders listed in the neurodevelopmental disorder category.