A<unk>  is a sudden, repetitive, stereotyped, nonrhythmic movement (motor<unk>  or sound (phonic<unk>  that involves discrete groups of muscles.<unk> s can be invisible to the observer (e.g.; abdominal tensing or toe crunching).  Movements of other movement disorders (e.g.; chorea, dystonia, myoclonus) must be distinguished from<unk> s.  Other conditions (e.g.; autism, stereotypic movement disorder) also include movements which may be confused with<unk> s. <unk> s must also be distinguished from compulsions of OCD and seizure activity.
Tic
Lime 
Awe 
Elm
Acyl
Bite
Wart
Oxamyl