Repetitive, seemingly driven, and apparently purposeless motor behaviour (e.g. hand shaking/waving, body rocking, head banging, self-biting, hitting own body)
AA. Both multiple motor tics AND ≥1 vocal tic present at some time during the illness, though not necessarily simultaneously B. Tics may wax and wane in frequency but have persisted for >1 year since first tic onset C. Onset before age 18
BA. Repetitive, seemingly driven, and apparently purposeless motor behaviour (e.g. hand shaking/waving, body rocking, head banging, self-biting, hitting own body) B. Interferes with social, academic, or other activities and may result in self-injury C. Onset in the early developmental period
Common specifiers
AMild; Moderate; Severe
BWith self-injurious behaviour; Without self-injurious behaviour; Associated with a known medical or genetic condition; Mild
Differential flags
APersistent motor OR vocal tic disorder (one category only - not both); Provisional tic disorder (< 1 year duration); Stereotypic movement disorder (rhythmic; suppressed by distraction rather than effort; no premonitory urge)
BTic disorders (sudden, rapid, brief; premonitory urge; suppressible with effort; wax and wane); OCD (ego-dystonic; anxiety-driven compulsions; not rhythmic); ASD (may coexist - code separately if ID criterion met independently)