Tic disorders

F95.9


DESCRIPTION

A tic is a sudden, rapid, recurrent, non-rhythmic stereotyped motor movement or vocalisation and includes the following subtypes:

  • Chronic motor or vocal tic disorder
  • Transient tic disorder
  • Tourette’s disorder

Tourette’s disorder is a chronic neuropsychiatric disorder that is characterised by both vocal and motor tics, and related somatosensory urges. It is commonly associated with a number of co-morbid conditions such as OCD, ADHD as well as disturbances of mood.

GENERAL AND SUPPORTIVE MEASURES

  • Psycho-education of patient, parents, teachers and peers: to reduce the stigma and social consequences of tics.
  • Supportive psychotherapy: to assist the individual to cope with the stigma/teasing, improve self-esteem and improve social skills.
  • Family therapy: to assist the family in managing associated symptoms and to reduce stress.

MEDICATION TREATMENT

Medication is used when the tics impair functioning and ideally for short periods only in order to reduce severe symptoms. The natural course of tics is to ‘wax and wane’.

  • Risperidone, oral.
    • Starting dose: starting at 0.25 mg/day (< 20kg) and 0.5 mg/day (> 20kg).
    • Recommended average dosage 1 mg/day.
    • Dosage range: 0.25 mg - 3 mg.

REFERRAL

  • Tourette’s syndrome not responding to therapy.
  • Tourette’s syndrome with comorbid psychiatric or medical conditions.