Brave star Billy - who is married to psychologist Pamela Stephenson - is currently being treated for his Parkinson's disease, which is commonly tackled through the use of levodopa, a chemical that the body converts into dopamine, an organic chemical used by the brain as a neurotransmitter. His spokeswoman added: ''He is receiving the appropriate treatment [for Parkinson's disease]." Presently, the disease will not hinder the comic-and-actor's career and he will be able to continue to work. Billy's spokeswoman explained: ''Billy has been assured by experts that the findings will in no way inhibit or affect his ability to work, and he will start filming a TV series in the near future, as well as undertaking an extensive theatrical tour of New Zealand in the new year."