Tics
Tics
Tics (/tɪks/) are sudden, rapid, nonrhythmic movements or sounds that people do repeatedly. They can be classified into two types: motor tics and vocal tics.
Etymology
The term "tic" originated from the French word "tique," which was first used in the early 19th century to describe a nervous condition characterized by involuntary twitching.
Types of Tics
Motor Tics
Motor tics are movements that are sudden, rapid, and nonrhythmic. They can be simple or complex. Simple motor tics are sudden, brief, repetitive movements that involve a limited number of muscle groups. Examples include eye blinking, facial grimacing, shoulder shrugging, and head or shoulder jerking. Complex motor tics are distinct, coordinated patterns of movements involving several muscle groups. Examples include sniffing or touching objects, jumping, and twirling.
Vocal Tics
Vocal tics are sounds that are sudden, rapid, and nonrhythmic. Like motor tics, they can be simple or complex. Simple vocal tics are sounds or noises that are brief and meaningless. Examples include coughing, throat clearing, and grunting. Complex vocal tics are words or phrases that may be recognizable but are out of context. Examples include repeating one's own words or phrases, repeating others' words or phrases, and using vulgar, obscene, or socially unacceptable words or phrases.
Related Terms
- Tourette Syndrome: A neurological disorder characterized by repetitive, stereotyped, involuntary movements and vocalizations called tics.
- Chronic Tic Disorder: A condition where a person has either motor tics or vocal tics, but not both, for more than a year.
- Transient Tic Disorder: A condition where a person has motor and/or vocal tics for less than a year.
- Tic Disorders: A group of psychiatric conditions that involve the presence of tics.
External links
- Medical encyclopedia article on Tics
- Wikipedia's article - Tics
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