https://www.psychdb.com/ 2026-07-27T14:09:42-0700 https://www.psychdb.com/ https://www.psychdb.com/lib/tpl/bootstrap3/images/favicon.ico text/html 2021-05-05T11:20:10-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/sleep/5-circadian-rhythm-sleep-wake-disorders/advanced?rev=1620238810&do=diff Circadian Rhythm Sleep-Wake Disorder, Advanced Sleep Phase Type Primer Circadian Rhythm Sleep-Wake Disorders, Advanced Sleep Phase Type is a circadian rhythm sleep-wake disorder characterized by sleep-wake times that are several hours earlier than desired or conventional times. <ul id="frontpage "style="column-width:20em; -webkit-column-count: 1; -moz-column-count: 1; column-count: 1;" class="catlist_columns catlist-nslist" ><ul id="frontpage"><li class="catlist-head"><div class="entity-list-… text/html 2021-05-05T11:12:10-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/sleep/5-circadian-rhythm-sleep-wake-disorders/delayed?rev=1620238330&do=diff Circadian Rhythm Sleep-Wake Disorder, Delayed Sleep Phase Type Primer Circadian Rhythm Sleep-Wake Disorder, Delayed Sleep Phase Type (also known as Delayed Sleep Phase Syndrome [DSPS]) is a circadian rhythm sleep-wake disorder characterized by a delay in the timing of the major sleep period (usually more than 2 hours) in relation to the desired sleep and wake-up time, resulting in symptoms of insomnia and excessive sleepiness.<ul id="frontpage "style="column-width:20em; -webkit-column-count: 1… text/html 2021-05-05T10:44:47-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/sleep/5-circadian-rhythm-sleep-wake-disorders/home?rev=1620236687&do=diff Circadian Rhythm Sleep-Wake Disorders Primer Circadian Rhythm Sleep-Wake Disorders are sleep disorders that involve a change in the timing of when an individual sleeps and is awake. The human body has a master circadian clock in a control centre of the brain known as the suprachiasmatic nucleus (SCN). <ul id="frontpage "style="column-width:20em; -webkit-column-count: 1; -moz-column-count: 1; column-count: 1;" class="catlist_columns catlist-nslist" ><ul id="frontpage"><li class="catlist-head">… text/html 2021-05-05T10:57:19-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/sleep/5-circadian-rhythm-sleep-wake-disorders/irregular?rev=1620237439&do=diff Circadian Rhythm Sleep-Wake Disorder, Irregular Sleep-Wake Type Primer Circadian Rhythm Sleep-Wake Disorder, Irregular Sleep-Wake Type is a circadian rhythm sleep-wake disorder characterized by symptoms of insomnia at night (during the usual sleep period) and excessive sleepiness (napping) during the day. Additionally, there is no discernable sleep-wake circadian rhythm, no major sleep period, and sleep is fragmented into at least three periods during a 24-hour day.<ul id="frontpage "style="co… text/html 2021-05-05T10:46:06-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/sleep/5-circadian-rhythm-sleep-wake-disorders/non-24-hour?rev=1620236766&do=diff Circadian Rhythm Sleep-Wake Disorder, Non-24-Hour Sleep-Wake Type Primer Circadian Rhythm Sleep-Wake Disorder, Non-24-Hour Sleep-Wake Type is a circadian rhythm sleep-wake disorder characterized by symptoms of insomnia or excessive sleepiness due to abnormal synchronization between the 24-hour light-dark cycle and the individual's endogenous circadian rhythm. Non-24-hour sleep-wake type is most common among individuals who are blind, are visually impaired, or have decreased light perception.<u… text/html 2021-05-05T10:57:35-0700 Anonymous (anonymous@undisclosed.example.com) https://www.psychdb.com/sleep/5-circadian-rhythm-sleep-wake-disorders/shift-work?rev=1620237455&do=diff Circadian Rhythm Sleep-Wake Disorder, Shift Work Type Primer Circadian Rhythm Sleep-Wake Disorder, Shift Work Type is a circadian rhythm sleep-wake disorder characterized by a history of an individual working outside of the normal hours (i.e. - 8:00 A.M. to 6:00 P.M) on a regular schedule. Individuals will have symptoms of excessive sleepiness at work, and sleep impairment at home.<ul id="frontpage "style="column-width:20em; -webkit-column-count: 1; -moz-column-count: 1; column-count: 1;" clas…