Which of the following symptoms is associated with the autonomic nervous system in Parkinson's disease?

Urinary retention is a symptom associated with the autonomic nervous system in Parkinson's disease due to the dysfunction of autonomic regulation that occurs as the disease progresses. Parkinson's disease is characterized by neurodegeneration, particularly in the areas of the brain that control both motor and autonomic functions. The autonomic nervous system regulates involuntary bodily functions, including bladder control.

In patients with Parkinson's disease, the autonomic dysfunction can lead to various bladder issues, including urinary retention, which is the inability to completely empty the bladder. This situation may result from an impaired signal between the brain and the bladder, affecting the normal reflexes required for urination.

Frequent headaches, loss of coordination, and visual disturbances can occur in Parkinson's disease but are not primarily linked to the autonomic dysfunction. Headaches may be related to tension or other factors rather than a direct consequence of autonomic nervous system involvement. Loss of coordination is generally tied to motor system deterioration, and visual disturbances may arise from related neurological changes, but they do not specifically indicate autonomic dysfunction as urinary retention does.