Parkinson’s disease (PD) which involves the death and malfunction of vital nerve cells in the brain, called neurons. This usually occurs in a part of the brain called the substantia nigra.
It leads to a reduction in a chemical called dopamine in the brain. Dopamine plays a vital role in regulating the movement of the body. A reduction in dopamine is responsible for many of the symptoms of Parkinson’s disease.
The disease develops gradually sometimes starting with a barely noticeable tremor in just one hand. The symptoms continue and worsen over time thereby damaging a part of the brain. At the early stage of the Parkinson disease, there is always stiffness of muscles especially in the face or the arms. This will make a person unable to show expressions like smiling, laughing, swinging the arms and will cause slurred speech.
Parkinson’s comes with age. Most people with Parkinson’s start to develop symptoms when they’re over 50, although around 1 in