Autonomic symptoms are common in patients with PD, though often under-recognized. As in the case of constipation, evidence for autonomic dysfunction may precede the onset of motor features by years; however, most autonomic symptoms increase in severity with the progression of motor disability. Careful attention by treating physicians to the autonomic features of PD is necessary in order to recognize these problems early and begin treatment in a timely fashion. In most areas of autonomic dysfunction in PD, the field remains in its infancy with many additional studies being needed to better understand the pathophysiology of the problem and to discover more effective treatments.
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