Complex motor tics: may be slower or may consist of stereotyped series of movements and may appear purposeful (includes copropraxia and echopraxia)
Vocal
Simple vocal tics: meaningless sounds and noises
Complex vocal tics: linguistically meaningful utterances such as words and phrases (including coprolalia, echolalia and palilalia), interruptions in the flow of speech, sudden alterations in pitch or volume.
Behavioral and Developmental
Often associated with attention deficit hyperactivity disorder, obsessions and compulsions, emotional lability, irritability, impulsivity, aggressivity and self-injurious behaviors; various learning disabilities, social difficulties including peer rejection.
