Editing Advanced sleep phase disorder (section)

{{Use dmy dates|date=December 2019}}
{{Infobox medical condition (new)
| name            = Advanced Sleep Phase Disorder
| synonyms        =
| field           = [[Chronobiology]]
| symptoms        =Earlier than desired onset and offset of sleep
| complications   =[[Sleep deprivation]]
| onset           =
| duration        =
| types           =
| causes          =
| risks           =Increased incidence with age
| diagnosis       =Polysomnography, Horne-Ostberg morningness-eveningness questionnaire
| differential    =
| prevention      =
| treatment       =Bright light therapy, chronotherapy
| medication      =
| prognosis       =
| frequency       =
| deaths          =
|image=|alt=|caption=}}

'''Advanced Sleep Phase Disorder''' ('''ASPD'''), also known as the advanced sleep-phase type (ASPT) of [[circadian rhythm sleep disorder]], is a condition that is characterized by a recurrent pattern of early evening (e.g. 7-9 PM) sleepiness and very early morning awakening (e.g. 2-4 AM). This sleep phase advancement can interfere with daily social and work schedules, and results in shortened sleep duration and excessive daytime sleepiness.<ref name=":25"/> The timing of sleep and melatonin levels are regulated by the body's central [[circadian clock]], which is located in the [[suprachiasmatic nucleus]] in the [[hypothalamus]].<ref name=":1">{{cite journal | vauthors = Reid KJ, Chang AM, Dubocovich ML, Turek FW, Takahashi JS, Zee PC | title = Familial advanced sleep phase syndrome | journal = Archives of Neurology | volume = 58 | issue = 7 | pages = 1089–94 | date = July 2001 | pmid = 11448298 | doi = 10.1001/archneur.58.7.1089 | doi-access = free }}</ref>