The 58-year-old actor — whose character in the Channel 4 soap Marnie Nightingale was killed off in January — revealed she was diagnosed the same week she was offered her role in the soap, and was terrified her diagnosis would result in her losing her job.
Anthony told OK! magazine: "I decided to, well, brave it and speak out now because there is no cure and I need to be a part of the cure, but also because my symptoms have got worse."
She added: "When I decided to come out 18 months ago I was always frightened I would lose my job and then what happened was I lost my job."
The Auf Wiedersehen, Pet star revealed her first symptoms included shaking while trying to light a cigarette on stage.
She said: "I heard Billy Connolly on Desert Island Discs and I thought 'That's what I've got!'"
Actor and comedian Sir Billy Connolly, 79, was diagnosed with Parkinson’s disease — a neurological condition that affects body movement — in 2013 and recently revealed he is now unable to play musical instruments.
Anthony said: "I’ve made my peace in many ways, in terms of I now call my add-on Parky. If I do too much it will basically shut me down and paralyse my, or my hands won’t work."
She starred as Marnie Nightingale in Hollyoaks since 2016, having previously appeared in a different role in the soap between 2008 and 2009.
She said she had felt, "scared and humiliated" and worried she would not be able to look after her child.
Anthony criticised Hollyoaks shortly after her exit scenes aired.
She posted on Instagram that she had "endured 18 months of humiliation, of Hell”.
“Gagged, silenced, suspended, fined... oh do I have a story to tell,” she told her 75,000 followers.
“Ask yourselves this. Why oh why have @hollyoaksofficial EXTENDED my contract a few weeks back until the end of February..? RIP Marnie..etc.. boo hoo.. ??”
Yahoo has contacted Hollyoaks for comment.
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