structural:scholar_edition
Sensory

Transformation of the sensory nervous system can lead to changes in sensation that include an impaired sense of smell, disturbed vision, pain, and paresthesia. Problems with visuospatial function may arise and lead to difficulties in facial recognition and perception of the orientation of drawn lines.

Peripheral neuropathy is known to be present in up to 55 percent of PD patients. While it is responsible for most of paresthesia and pain in PD, its role in postural instability and motor impairment is poorly understood.