Quality of sleep in young onset Parkinson's disease: Any difference from older onset Parkinson's disease.
BACKGROUND
Sleep disorders occur commonly in Parkinson's disease and are often under-recognized and under treated in clinical practice.


OBJECTIVE
To determine the quality of sleep in patients with Young onset Parkinson's disease (YOPD) and to note whether there is any difference in quality of sleep from those patients with older onset Parkinson's disease (OOPD).


METHODS
One hundred and fifty six patients with Parkinson's disease (YOPD-51, OOPD-105) were clinically examined and quality of sleep was determined using Pittsburgh sleep quality index (PSQI), Parkinson's disease Sleep Scale (PDSS) and Epworth Sleep Scale (ESS). Other scales included Uniﬁed Parkinson's Disease Rating Scale -part III (UPDRS-III), Hoehn & Yahr Stage, Mini Mental Status Examination, Hamilton anxiety rating scale and Hamilton depression rating scale.


RESULTS
The frequency of insomnia was higher in OOPD (55.2%) as compared to YOPD (27.5%) group (p = 0.001). The frequency of nightmares was lower in YOPD (7.8%) when compared to OOPD (24.8%) group (p = 0.012). The mean hours of actual sleep per night were higher in YOPD patients. Global PSQI score was better in YOPD indicating good overall sleep quality in YOPD patients. The total ESS score was significantly lower in YOPD (p = 0.019). The total PDSS score was significantly better in YOPD patients (p = 0.018).


CONCLUSIONS
Patients with YOPD had an overall better quality of sleep with lesser incidence of insomnia, nightmares, daytime sleepiness and restlessness during sleep.
Department of Neurology, M.S Ramaiah Medical College and Hospital, Bangalore 560054, Karnataka, India.
Rohan
R
Mahale
Department of Neurology, National Institute of Mental Health & Neurosciences, Hosur Road, Bangalore 560029, Karnataka, India.
Ravi
R
Yadav
Department of Neurology, National Institute of Mental Health & Neurosciences, Hosur Road, Bangalore 560029, Karnataka, India. Electronic address: palpramod@hotmail.com.
Pramod Kr
PK
Pal
D000328:Adult; D017668:Age of Onset; D000368:Aged; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010300:Parkinson Disease / Q000175:diagnosis* / Q000453:epidemiology*; D012894:Sleep Stages / Q000502:physiology*; D012893:Sleep Wake Disorders / Q000175:diagnosis* / Q000453:epidemiology*; D055815:Young Adult
Older onset PD; Parkinson's disease; Sleep; Young onset PD