Compared with controls, PD patients have a higher frequency of which condition?

Compared with controls, PD patients have a higher frequency of which condition?

• A. Bilateral occipitoatlantal compression
• B. Scoliosis
• C. Cervical radiculopathy
• D. Thoracic outlet syndrome

Answer: (A)

Parkinson disease often brings dystonic posturing and axial stiffness that alter the way the head and upper neck sit and move. This abnormal muscle tone and sustained neck positioning can narrow and stress the craniocervical junction, leading to increased compression between the skull (occipital region) and the first cervical vertebra. Because this area is directly affected by the characteristic neck rigidity and dystonia of PD, bilateral occipitioatlantal compression occurs more frequently in PD patients than in controls. Other options—scoliosis, cervical radiculopathy, and thoracic outlet syndrome—can occur in the general population for various reasons, but they are not as specifically linked to the motor features of PD as craniocervical junction compression is.

Parkinson disease often brings dystonic posturing and axial stiffness that alter the way the head and upper neck sit and move. This abnormal muscle tone and sustained neck positioning can narrow and stress the craniocervical junction, leading to increased compression between the skull (occipital region) and the first cervical vertebra. Because this area is directly affected by the characteristic neck rigidity and dystonia of PD, bilateral occipitioatlantal compression occurs more frequently in PD patients than in controls.

Other options—scoliosis, cervical radiculopathy, and thoracic outlet syndrome—can occur in the general population for various reasons, but they are not as specifically linked to the motor features of PD as craniocervical junction compression is.