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A spasmodic muscular contraction, most commonly involving the face, mouth, eyes, head, neck, or shoulder muscles. The spasms may be tonic or clonic. The movement appears purposeful, is often repeated, is involuntary, and can be inhibited for a short time. Children between the ages of 5 and 10 years are esp. likely to develop tics. SEE: Tourette syndrome
ETIOLOGY In most cases, the cause is unknown. In some people, the tic is worsened by anxiety and nervous tension.
Venes, Donald, editor. "Tic." Taber's Medical Dictionary, 23rd ed., F.A. Davis Company, 2017. Taber's Online, www.tabers.com/tabersonline/view/Tabers-Dictionary/738951/all/tic.
Tic. In: Venes D, ed. Taber's Medical Dictionary. 23rd ed. F.A. Davis Company; 2017. https://www.tabers.com/tabersonline/view/Tabers-Dictionary/738951/all/tic. Accessed July 23, 2019.
Tic. (2017). In Venes, D. (Ed.), Taber's Medical Dictionary. Available from https://www.tabers.com/tabersonline/view/Tabers-Dictionary/738951/all/tic
Tic [Internet]. In: Venes D, editors. Taber's Medical Dictionary. F.A. Davis Company; 2017. [cited 2019 July 23]. Available from: https://www.tabers.com/tabersonline/view/Tabers-Dictionary/738951/all/tic.
* Article titles in AMA citation format should be in sentence-case
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T1 - tic
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ED - Venes,Donald,
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PB - F.A. Davis Company
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DB - Taber's Online
DP - Unbound Medicine