For some, the disorder begins abruptly with multiple symptoms of movements and sounds. Very likely other neurotransmitters, such as serotonin, are also involved. A diagnosis is made by observing symptoms and by evaluating the history of their onset. It is known that a higher than usual incidence of milder tic disorders and obsessive compulsive behaviours are more common in the families of TS patients. The chance that the child of a person with TS will have the disorder is at least three times higher for a son than for a daughter.
Remission can occur at any time.
Present data suggests that the tic symptoms tend to stabilize and become less severe in adult life. Those diagnosed with TS can anticipate a normal life span. The majority of people with TS are not significantly disabled by their tics or behavioural symptoms and therefore do not require medication. However, there are medications to help control symptoms when they interfere with functioning. The dosage necessary to achieve maximum control of symptoms varies for each patient and must be gauged carefully by a doctor.