Speech Therapy

Know About Tic Disorder

Tic Disorders are based on type and duration of tics .
A tic can be a very fast and a sudden movement of muscle. For e.g. Blinking of eyes – this is called as Motor Tic due to the involvement of muscle activity.
A tic can be a sound made by moving air through mouth, nose and throat without involving the vocal cords. For e.g. – Clearing of throat. This is called as Phonic Tic as it involves sound formation.
Tics are sudden, rapid activities without following any particular pattern unlike the heart beat (hence called non-rhythmic) and are irresistible to be controlled by one’s wish (called involuntary). It is habitual and done again and again hence called stereotyped.

Tic Disorders occur as a broad range of mild to severe conditions of Tic occurrence. It is classified basing on the duration and severity.

Types of Tics seen in People:

  • Simple Tics generally involve only one group of muscles, for e.g.- head jerking or shoulder shrugging.
  • Simple Motor Tics can be of an endless variety like- clapping hands, stretching neck, mouth movements, jerks in head, arm or leg etc.
  • Simple Phonic Tic can be any sound or noise like – sniffing, or grunting
  • Complex Motor Tics appear meaningful and lasts long. For e.g.- touching people, touching objects.
  • Complex Phonic Tics are rarely seen in the absence of simple tics and includes the following:
    • Echolalia (repeating words spoken by others)
    • Palilalia (repeating one’s own words)
    • Lexilalia (repeating words after reading)
    • Coprolalia ( speaking socially-objectionable words or phrases spontaneously)

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