An uncontrollable shaking of the hands, for example, might emerge due to medication too, but if this is the case, speak to your doctor about the side effect.
As Parkinson’s disease progresses, movement may become more slow and the limbs can become stiff.
One of the indications of Parkinson’s, pointed out by the charity, is the development of small handwriting.
Known as micrographia, the development of smaller and more crowded lettering when writing could be a key warning sign of depleting neurons in the brain.