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What can cause a nervous tic?

Gail M. Saltz, MD
Psychiatry
A nervous tic, a repetitive body movement or sound that is mainly nonsensical, is a common occurrence in childhood. In this video, psychiatrist Gail Saltz, MD, explains the difference between acute and chronic tics, and what may cause each type. 

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.