Akathisia in Parkinson's disease

Area of Science:

• Neurology
• Movement Disorders
• Clinical Diagnostics

Background:

• Akathisia is a common and distressing side effect of dopaminergic medications used in Parkinson's disease (PD).
• Accurate diagnosis of akathisia in PD patients is crucial for effective management but can be challenging.
• Limited data exists on the prevalence and specific clinical features of akathisia within specialized PD practices.

Purpose of the Study:

• To determine the prevalence and clinical characteristics of akathisia in patients with Parkinson's disease.
• To evaluate the diagnostic agreement among clinicians for akathisia in PD.
• To assess the sensitivity and specificity of a patient self-report questionnaire for identifying akathisia.

Main Methods:

• A cohort of 56 consecutive Parkinson's disease patients from a tertiary care practice participated.
• Patients completed an akathisia self-report questionnaire.
• Two independent examiners, blinded to questionnaire results, conducted clinical evaluations for akathisia.

Main Results:

• Akathisia was clinically diagnosed in 45% of the Parkinson's disease patients.
• High interrater reliability (K = 0.89) was observed for the clinical diagnosis of akathisia.
• Patient self-reported restlessness demonstrated 89% agreement with examiner diagnoses.
• Akathisia was associated with PD severity and earlier age of onset.
• Leg symptoms were most common, with brief suppressibility of associated movements.

Conclusions:

• Akathisia is highly prevalent in Parkinson's disease patients treated at specialized centers.
• A brief patient questionnaire is a reliable tool for screening akathisia in PD.
• Clinical evaluation shows high agreement among examiners for akathisia diagnosis.
• Understanding the clinical features and associations of akathisia can improve patient care.