Tics usually occur repeatedly at irregular intervals.
Examples of tics:
Rapid Eye Blinking – A person with a rapid eye blinking tic will blink their eyes more often than normal. Parents of a child with a rapid eye blinking tic will notice this happening as part of their normal observations of the child. They will observe that the number of eye blinks per minute is greater than they would think would be normal.
Unnecessary Throat Clearing – A person with this tic will appear to make throat clearing sounds more often than would be considered necessary.
There are 4 categories of tics:
Simple Motor Tics: sudden meaningless movement of an individual muscle group.
Tensing parts of the body
Rapid jerking of any part of the body
Simple Vocal (or Phonic) Tics: linguistically meaningless sounds or noises.
Syllable sounds such as “uh, uh,” “eee,” and “bu”
Complex Motor Tics: a group of movements using more than one muscle group which may appear purposeful.
Touching objects (or others or self)
Biting the mouth, lip or arm
Making funny facial expressions
Tearing paper or books
Complex Vocal Tics: repetitive, nonsensical or out of context utterances of words, phrases or statements.
Uttering phrases such as “Oh boy,” “Shut up,” “You know,” “You’re fat,” “All right,” “What’s that” etc
Complex respiratory (breathing) patterns
Speech atypicalities such as speaking in unusual rhythms, tones, accents, loudness, rapidity
Other examples of tics can be found in the tic list.