Parkinson's disease belongs to a group of conditions called motor system disorders.
Parkinson's and related disorders are the result of the loss of dopamine-producing
brain cells. Dopamine is a chemical messenger responsible for transmitting signals
within the brain. Parkinson's disease occurs when certain nerve cells, or neurons,
die or become impaired. Normally, these neurons produce dopamine. Loss of dopamine
causes the nerve cells to fire out of control, leaving patients unable to direct
or control their movement in a normal manner. Life Alert can
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