Connolly's spokeswoman earlier said his Parkinson's symptoms will not affect his ability to tour and perform.
"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."
Billy Connolly jokes at the 60th San Sebastian Film Festival in Spain. Photo / AP
A former shipyard welder in Glasgow who became a folk singer and then an acclaimed comic, Connolly made his cinematic breakthrough in the 1997 film Mrs Brown opposite Judi Dench.