Information about your sleep schedule
What is affecting your sleep?
Your body has an internal clock which signals your body when it is time to fall asleep and when it is time to wake up. This internal clock runs on an approximate 24hour schedule, controlling other body processes including your blood pressure and digestion. This 24-hour schedule is called a circadian rhythm. Your body uses light to determine if it is day or night. Normally a person is alert during the day time and sleepy at night time but if there is a change in your normal routine or habits your body's circadian rhythm may shift over time. After this shift, you may be sleepy during the day and alert at night. If this time alert and awake does not match with the time you should be working or participating in other activities you may have a circadian rhythm disorder.
Advanced Sleep-Wake Phase Disorder
This causes people to fall asleep several hours before a normal bedtime and wake up hours earlier than most people wake in the morning.
Delayed Sleep-Wake Phase Disorder
A sleep pattern that is delayed by two or more hours so that a person goes to sleep later at night and sleeps later in the morning.
Jet Lag Disorder
Occurs when you travel across multiple time zones and have difficulty adjusting to the new schedule.
Irregular Sleep-Wake Rhythm Disorder
Causes a person's circadian rhythms to be so disorganized that there is no clear sleep or wake pattern. People with this sleep disorder may sleep off and on in a series of naps over a 24-hour period.
Non-24-Hour Sleep-Wake Rhythm Disorder
Non-24 is a sleep disorder that causes a person's sleep time to shift a little later every day. Sleep times may go in and out of alignment with other people over time.
Shift Work Disorder
A non-traditional work schedule involving shifts that occur when most people are sleep can cause shift work disorder. The condition causes your sleep to be poor and consistent feelings of fatigue or exhaustion.
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