- Movements are recurrent and nonrythmic
- Patients experience an overwhelming inner urge to make the movement
- Movements are most often brief and jerky and include the following:
- Blinking
- Raising eyebrows
- Nostrils flaring
- Grimacing
- Opening the mouth
- Sticking out the tongue
- Shrugging shoulders
- Jerking arms
- Clenching the fists
- Kicking
- Curling of the toes
Vocalizations, such as grunts, sniffing, throat clearing, squealing, snorting, clicking, hissing, or moaning may also occur.
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