| tics | <physiology> Spasmodic muscular contractions most commonly involving the face, mouth, eyes, head, neck or shoulder muscles. The movement often appears purposeful but is involuntary. (28 May 1998) |
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| facial tics | <neurology> A repetitive spasmodic movement of the eyes or facial muscles. May also involve the neck or shoulders. Tics are most common in children. The cause is unknown but may be linked to stress. Tics are more common in children with attention deficit hyperactivity disease. Most tics require no treatment and resolve on their own with patient education. (27 Sep 1997) |
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