Monty Python star Terry Jones has been diagnosed with a severe variant of dementia.
The 74-year-old is suffering from primary progressive aphasia, which affects his ability to communicate.
As a result, Jones “is no longer able to give interviews”, his spokesman said.
The news was confirmed as Bafta Cymru announced the Welsh-born comedian is to be honoured with an outstanding contribution award.
The National Aphasia Association describes primary progressive aphasia as a neurological syndrome in which language capabilities become slowly and progressively impaired.
“It commonly begins as a subtle disorder of language, progressing to a nearly total inability to speak, in its most severe stage,” their website states.