Parkinson's disease has unknown origin. There are invoked a specific hereditary predisposition, which would still only play a minor role, and, recently, the environmental factors, village-related as the influence of toxins like pesticides, for example.
Instead of, the disease mechanism is known: it is a degeneration which affects the nerve cells of a core central (gray matter located inside the brain) called the locus niger, that entails a lack of secretion of dopamine, which is a neurotransmitter.
Parkinson's disease is a chronic neurological disease, that is characterized by tremors, stiffness and slowness of movement.
The disease starts to age of 55 years, sometimes immediately after a stress (surgery, emotional shock), often without reason and in a very gradual and insidious manner.
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