Other Tic Disorders
A person who has
tics does not necessarily have
Tourette's disorder. Other disorders or medical
conditions can cause tics.
- Transient tic disorder. A person with transient tic disorder has one or more motor and/or
vocal tics. The tic occurs many times a day, nearly every day, for at least 4
weeks, but for no longer than 12 consecutive months. For this diagnosis, the
tics must occur before the age of 18, and they cannot be caused by a substance
or another condition.
- Chronic motor or vocal tic disorder. A person with
chronic motor or vocal tic disorder has either motor or vocal tics, but not
both. The tics occur many times a day and nearly every day, for more than 1
year. During this period, the person is not tic-free for more than 3 months.
The tics start before the age of 18, and they cannot be caused by a substance
or another condition.
- Tic disorders not otherwise specified. Nonspecific
tic disorders are those that do not fall into any other of the tic categories.
Examples include a tic that lasts less than 4 weeks or tics that start after
the age of 18. "Secondary tourettism" is a term often used to describe tics
that develop as a result of strokes, infection, injury, exposure to certain
drugs or toxins, or conditions other than Tourette's disorder.
Credits
| By | Healthwise Staff |
| Primary Medical Reviewer | John Pope, MD - Pediatrics |
| Specialist Medical Reviewer | Karin M. Lindholm, DO - Neurology |
| Last Revised | July 26, 2011 |