[Gilles de la tourette syndrome: clinical spectrum and management].
OBJECTIVE
To present the current concepts of the clinical phenomenology and natural history of Gilles de la Tourette syndrome (GTS), differential diagnosis with other involuntary movements, its pathogenesis and current management.


METHODS
GTS is a disorder characterized by a spectrum of both motor and sonic tics, and a spectrum of behavioral disorders. There is not a biological marker that confirms or refutes the diagnosis of GTS, so this diagnosis remains purely clinical. It has been found to be present in 1 to 3% of school population. An specific cause for GTS is unknown, though most cases appear to occur on an hereditary polygenetic basis. Observations that drugs increasing dopamine neurotransmission, including levodopa and the dopamine receptor agonist pergolide lessen tics, have called into question the dopamine receptor supersensibility hypothesis. The hypothesis proposing basal ganglia and frontostriatal pathways involvement in the pathophysiology of the disorder is the most likely. Frequently, disruption due to tics is overshadowed by comorbid conditions, like obsessive compulsive behaviors, attention deficit hyperactivity disorder, other behavioral disorders and learning disabilities, so the management should be targeted to them.


CONCLUSIONS
The knowledge about the basic mechanisms and the integral definition of the clinical spectrum of tics and neurobehavioral manifestations, and its natural history in a patient with GTS, allow us to establish a more rational approach for management and prognosis
Calderón González
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Centro Neurologico para niños y adolescentes. Hospital San Josée Tec de Monterrey, Monterrey, Méexico. racacena@neuroped.com.mx
Calderón Sepúlveda
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RF
D001521:Behavior Therapy; D015897:Comorbidity; D003937:Diagnosis, Differential; D018491:Dopamine Agonists / Q000627:therapeutic use; D006801:Humans; D001523:Mental Disorders / Q000503:physiopathology; D010479:Pergolide / Q000627:therapeutic use; D011954:Receptors, Dopamine / Q000378:metabolism; D020323:Tics / Q000503:physiopathology / Q000628:therapy; D005879:Tourette Syndrome / Q000175:diagnosis / Q000188:drug therapy* / Q000209:etiology / Q000503:physiopathology*
D018491:Dopamine Agonists; D011954:Receptors, Dopamine; D010479:Pergolide