How is tourette's inherited?

Multifactorial: Although clearly a genetic disorder, the mode of inheritence for tourette's is complex, involving multiple defective genes, and perhaps even an interplay of genetic and environmental factors. There is also clearly a genetic association between the triad of tourette's, ocd, and adhd, and i generally screen patients i diagnose with tourette's for concurrent adhd and/or ocd.

Details uncertain: We know that tourette's disorder definitely runs in families, but the specific genes involved have yet to be identified. In families with a strong inheritance pattern, males often develop tourette's while females are more at risk for ocd--but risk of both is increased for both sexes.

Mostly: it is not classically inherited. Once thought to be an autosomal dominant disorder, now clearly more complex. A tendency to Tourette's is inherited, but more than one gene may be involved, and environmental factors may also come into play.