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The primary disorder is benign essential blepharospasm, in which term the qualifier essential indicates that the cause is unknown. Blepharospasm may occur as secondary to conditions including dry eyes and other specific ocular disease or conditions, Meige's syndrome and other forms of dystonia, and Parkinson's disease and other movement ...
Spasm means "uncontrolled muscle contraction". The term blepharospasm ['blef-a-ro-spaz-m] can be applied to any abnormal blinking or eyelid tic or twitch resulting from any cause, ranging from dry eyes to Tourette's syndrome to tardive dyskinesia. The blepharospasm referred to here is officially called benign essential blepharospasm (BEB) to ...
A tic is a sudden and repetitive motor movement or vocalization that is not rhythmic and involves discrete muscle groups. [1] [2] [3] Tics are typically brief and may resemble a normal behavioral characteristic or gesture. [4] Tics can be invisible to the observer, such as abdominal tensing or toe crunching.
Every year, children and their parents seek medical care for tics. These involuntary, repetitive verbal expressions and physical behaviors are often caused by the neurologic condition Tourette ...
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Lewis Capaldi has announced he is taking a break from touring after he was forced to cut his Glastonbury set short last weekend, suffering a series of tics on the Pyramid Stage. The singer was ...
In the fourth revision of the DSM , tic disorders were classified as follows: [12] Transient tic disorder consisted of multiple motor and/or phonic tics with duration of at least 4 weeks, but less than 12 months. Chronic tic disorder was either single or multiple motor or phonic tics, but not both, which were present for more than a year.
Tics must also be distinguished from fasciculations. Small twitches of the upper or lower eyelid, for example, are not tics, because they do not involve a whole muscle, but rather are unsuppressible twitches of a few muscle fibre bundles.