Tic disorders are defined in the Diagnostic and Statistical Manual of Mental Disorders (DSM) based on type (motor or phonic) and duration of tics (sudden, rapid, nonrhythmic movements). Tic disorders are defined similarly by the World Health Organization (ICD-10 codes). Classification
DSM-5
The fifth revision of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), published in May 2013, classifies Tourette syndrome and tic disorders as motor disorders listed in the neurodevelopmental disorder category.Tic disorders, in ascending order of severity, are:
307.20 Other specified tic disorder (specify reason)
307.20 Unspecified tic disorder
307.21 Provisional tic disorder
307.22 Persistent (chronic) motor or vocal tic disorder (specify motor or vocal)
307.23 Tourettes disorderDevelopmental coordination disorder and stereotypic movement disorder are also classified as motor disorders. ICD-10
ICD10 diagnosis codes are:
F95.0  Transient tic disorder
F95.1  Chronic motor or vocal tic disorder
F95.2  Combined vocal and multiple motor tic disorder [Gilles de la Tourette]
F95.8  Other tic disorders
F95.9  Tic disorder, unspecified

Diagnosis
Tics should be distinguished from other causes of tourettism, stereotypies, chorea, dyskinesias, myoclonus and obsessive-compulsive disorder. Treatment
Education, and a "watch and wait" strategy, are the only treatment needed for many, and the majority of individuals with tics do not seek treatment. When needed, management of tic disorders is similar to management of Tourette syndrome. Epidemiology
Tic disorders are more commonly diagnosed in males than females.At least one in five children experience some form of tic disorder, most frequently between the ages of seven and twelve.
A lobulation is an appearance resembling lobules. For instance, the thyroid gland may become large and lobulated in Hashimotos thyroiditis.Fetal lobulation, also known as fetal lobation, of the kidney is evident on scanning. Fetal lobation is a normal stage in the development of the kidney. In the adult a normal anatomic variant is that of persistent fetal lobulation of the kidney that may be mistaken for a tumour. See also
Lobation


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