Ian Frizell, 55, was diagnosed with the disease in 2011, but has suffered from gradually worsening symptoms since 1995.
Now he has filmed a video to show what a huge difference a small amount of medicinal cannabis makes to his tremors.
In the clip, Ian explains that he underwent deep brain stimulation surgery earlier this year, a medical implant that helps mask the symptoms of Parkinson’s. He then switches the DBS device off to show the severity of his tremors.
