Provisional tic disorder approximately replaced transient tic disorder: because initially presenting tics may eventually be diagnosed as chronic tic disorder or Tourettes, transient suggested it could only be defined in retrospect (though that perception did not follow the DSM-IV-TR definition). The term provisional "satisfies experts with a more systematic epidemiological approach to disorders", but should not imply that treatment might not be called for. Differentiation of chronic motor or vocal tic disorder: DSM-5 added a specifier to distinguish between vocal and motor tics that are chronic. This distinction was added because higher rates of comorbid diagnoses are present with vocal tics relative to motor tics. Now includes as Tourettes Disorder patients with tics who experienced a 3-month or longer remission since the first tic, as long as the first tic was at least a year ago. Stimulant use as a cause removed: there is no evidence that the use of stimulants causes tic disorders. New categories, Other specified and Unspecified: for tic disorders that result in significant impairment to the individual yet do not meet the full criteria for other tic disorders. The new categories account for tics with onset in adulthood, or tics triggered by other medical conditions or illicit drug use. References
External links

The Tourette Syndrome Classification Study Group. "Definitions and classification of tic disorders". Arch Neurol. 1993 Oct;50(10):1013-6. PMID 8215958. Retrieved on 2005-03-22
Walkup JT, Ferrão Y, Leckman JF, Stein DJ, Singer H. Tic disorders: some key issues for DSM-V (PDF). Depress Anxiety. 2010 Jun;27(6):600–10. PMID 20533370 doi:10.1002/da.20711
Ileitis is an inflammation of the ileum, a portion of the small intestine. Crohns ileitis is a type of Crohns disease affecting the ileum. Ileitis is caused by the bacterium Lawsonia intracellularis. Inflammatory bowel disease does not associate with Lawsonia intracellularis infection. References


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