Parkinsonism and cerebrospinal fluid disorders

Area of Science:

• Neurology
• Neurosurgery
• Movement Disorders

Background:

• Cerebrospinal fluid (CSF) disorders, including hydrocephalus and intracranial hypotension, can manifest with various motor symptoms.
• The specific presentation of parkinsonism in CSF disorders remains incompletely understood.

Purpose of the Study:

• To review and analyze the occurrence and clinical characteristics of parkinsonism in patients with normal pressure hydrocephalus (NPH), obstructive hydrocephalus, and intracranial hypotension.
• To evaluate the response to different treatments for parkinsonism associated with CSF disorders.

Main Methods:

• Literature search for studies detailing parkinsonism in NPH, obstructive hydrocephalus, and intracranial hypotension.
• Analysis of clinical presentations, including bradykinesia, rigidity, rest tremor, and gait/postural instability.
• Assessment of treatment responses, focusing on medication (levodopa) and surgical interventions (shunt surgery).

Main Results:

• Parkinsonism is most frequently observed in NPH patients, often with upper limb or asymmetric involvement beyond typical gait disturbance.
• In obstructive hydrocephalus, parkinsonism is associated with aqueductal stenosis and post-shunt surgery.
• Levodopa therapy shows limited efficacy, while shunt surgery provides significant improvement in NPH and obstructive hydrocephalus cases. Intracranial hypotension cases also show improvement after treatment.

Conclusions:

• Current research on CSF disorders and parkinsonism is largely descriptive and of low quality.
• Increased clinician awareness of parkinsonism as a differential diagnosis in CSF disorders is crucial.
• Further research is needed to elucidate the underlying pathophysiological mechanisms linking CSF disorders and parkinsonism, potentially involving the nigrostriatal pathway.