... . A tic isn't necessarily an involuntary action but more of an irresistible urge to perform a tic. They can be suppressed but it is very hard to do so. "Although the DSM-IV has recently changed the upper age of onset from 21 down to 18, the Tourette Syndrome Association Medical Advisory Board is working to have it reverted back to 21, as ... ...

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• Approx Pages: 3
• Grade Level: High School