Excessive daytime sleepiness in cervical dystonia

Area of Science:

• Neurology
• Sleep Medicine

Background:

• Cervical dystonia (CD) is a focal movement disorder with limited research on associated sleep disturbances.
• Excessive daytime sleepiness (EDS) is a common complaint in neurological conditions, but its prevalence in CD is not well-established.

Purpose of the Study:

• To investigate the prevalence of excessive daytime sleepiness in patients with cervical dystonia.
• To compare sleepiness levels in CD patients with those in patients with other focal movement disorders and healthy controls.

Main Methods:

• A cross-sectional study assessed 43 CD patients, 19 patients with other focal movement disorders, and 49 healthy controls.
• The Epworth Sleepiness Scale (ESS) was used to measure excessive daytime sleepiness.
• Patient data included medication use (anticholinergics, benzodiazepines, antidepressants) and the Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS).

Main Results:

• A significantly higher percentage of CD patients (21%) reported abnormal ESS scores (>11) compared to other focal movement disorder patients (0%) and healthy controls (4%) (p < 0.05).
• Anticholinergic medication use partially explained the increased sleepiness in CD patients.
• No association was found between ESS scores and age, gender, race, TWSTRS scores, or other common medication use.

Conclusions:

• A substantial proportion of cervical dystonia patients exhibit excessive daytime sleepiness.
• Further research into sleep disorders, including EDS, in CD patients is warranted.
• Identifying and managing sleep disturbances may improve quality of life for CD patients.