Study of Sleep Disorders and Polysomnographic Evaluation among Primary Chronic Daily Headache Patients.
OBJECTIVE
Studies related to sleep disorders and polysomnography (PSG) among chronic daily headache patients are rare. We studied this and compared chronic migraine (CM) with chronic tension-type headache.


METHODS
Eighty-three patients were recruited. They were evaluated by semi-structured interview, headache, and sleep diaries along with Epworth Sleepiness Scale score and insomnia symptom score. Overnight PSG was performed and data compared.


RESULTS
Chronic tension-type headache was more common than CM, both having female preponderance. Insomnia followed by excessive daytime sleepiness was prevalent sleep disorder. Sleep efficiency and Stage 3 sleep were lower in CM compared to chronic tension-type. ESSS was significantly increased among chronic tension-type patients. No significant correlation was found among PSG parameters in patients with or without sleep disorders.


CONCLUSIONS
Insomnia being most common sleep disorder among chronic headache population. Chronic tension-type headache had slightly better slow-wave sleep than CM and significantly increased daytime sleepiness.
Department of Neurology, King George's Medical University, Lucknow, Uttar Pradesh, India.
Rajesh
R
Verma
Department of Neurology, King George's Medical University, Lucknow, Uttar Pradesh, India.
Kamal Kumar
KK
Nagar
Department of Neurology, King George's Medical University, Lucknow, Uttar Pradesh, India.
Ravindra Kumar
RK
Garg
Department of Neurology, King George's Medical University, Lucknow, Uttar Pradesh, India.
Ravi
R
Uniyal
Department of Neurology, King George's Medical University, Lucknow, Uttar Pradesh, India.
Praveen Kumar
PK
Sharma
Department of Neurology, King George's Medical University, Lucknow, Uttar Pradesh, India.
Sweta
S
Pandey
Chronic daily headache; insomnia; polysomnography; sleep