The loss of production of the chemical dopamine due to nerve degeneration in the brain (esp. the substania nigra) is the key component for the inception of this movement disorder. Dopamine is the messenger that is responsible for coordinating movement, balance and the reward system with other nerve and muscle cells.
As of now, we do not know the exact cause of the loss of nerve cells that leads to Parkinson’s disease. Researchers believe it may be due to genetic or environmental factors,…