Catalog
Primary tics or tic disorders
Link to WHO Definition
Primary tics or tic disorders – http://id.who.int/icd/entity/765464219
Primary tics or tic disorders are characterised by the presence of chronic motor and/or vocal (phonic) tics. Motor and vocal tics are defined as sudden, rapid, non-rhythmic, and recurrent movements or vocalizations, respectively. In order to be diagnosed, tics must have been present for at least one year, although they may not manifest consistently.