Rapper Kanye West has been criticised for a song featuring the lyric “get this bitch shaking like Parkinson’s”.
The words are on the track On Sight, from West's sixth studio album, Yeezus.
Parkinson’s is a degenerative disease of which symptoms including shaking, slowness of movement and rigidity.
Steve Ford, chief executive at Parkinson’s UK, said: “Kanye West has shown an inexcusable level of stupidity and cruelty towards people living with an incurable condition.
“Life with Parkinson’s is difficult enough without becoming fodder for insensitive celebrities who should know better, looking for their next big hit.
“People with Parkinson’s have to cope with intolerable social discrimination on a daily basis – often to the point where they are afraid to go out in public – and this sort of thoughtless, callous comment can only serve to make things even worse for them.”
West recently became father to a daughter with reality star Kim Kardashian.
In April a Parkinson's UK poll revealed 41% of sufferers revealed they had been discriminated against because they suffer from the disease.
The research, which saw 2,900 sufferers questioned, also found one in five reveal their symptoms had been mistaken for drunkeness.
The disease affects 127,000 people across the UK.