Older woman in wheelchair that's being pushed by younger man.Today is World Parkinson’s Day and according to leading charity Parkinson’s UK, the neurological condition is the fastest-growing of it’s kind and is predicted to double – set to affect some 25 million people globally by 2050.On their website, the charity states: “Parkinson’s is a progressive neurological condition. This means that it causes problems in the brain and gets worse over time.“There are over 40 symptoms of Parkinson’s. But the three main symptoms of Parkinson’s are a tremor (shaking), slowness of movement and rigidity (muscle stiffness).”Early signs of Parkinson’s&l