In these cells, the neurotransmitter dopamine is no longer produced.
Dopamine is needed to transmit the signals that control body movements to and from the brain.
That's why the disease is characterized by rhythmic tremors, rigid muscles, and loss of reflexes. Parkinson's disease usually occurs between the ages of 40 and 70, although Parkinson's disease in individuals under the age of 50 is rare. Individuals with Parkinson's disease can have difficulty living independently as the disease progresses because of significant physical and intellectual symptoms. Home treatment, medication, lifestyle modifications, and appropriate medical care can help slow the progress of the disease. The origin of this disease is not yet known.