Delayed Sleep-Phase Syndrome

Mackenzie , Jenna ,Ann Marie, Lyndsey, Cheyenne

What is Delayed Sleep-Phase Syndrome?

is a sleep disorder in which the cycle of sleep and wakefulness in a person's 24-hour day is significantly delayed. As a result, the clock-dependent alerting mechanism in our brains that releases the hormones that give us energy gets activated a lot later at night than we may like it to.

Disorder Description

  • Symptoms- Inability to fall asleep at a desired time, inability to wake up at the desired time & excessive daytime sleepiness, generally no other sleep problems, and depression & behavior problems.
  • Possible causes- The exact cause of this disorder is not completely known. It is a common disorder. Scientists think that DSPS may be an exaggerated reaction to the normal shift in the internal clocks that is seen in adolescents after puberty. It is not a deliberate behavior, but certain habits can make this condition worse.
  • People most at risk- Dsps is most common in adolescents and college students.

Treatments and cures

Drugs-There are no drugs that can treat this disorder, only Bright light Therapy, and Chronotherapy.

Behavior changes would be just having more fatigue, and sleepiness. With those symptoms comes with there own changes.

Help place above. ^^^^

How do you know if you have it?

  1. Is there a delay in your sleep pattern in relation to your desired sleep and wake times? Do you have trouble falling asleep at the desired time of night? Are you then unable to awaken at the desired or socially acceptable time?
  2. When left to your own sleep schedule, do you have a normal duration and quality of sleep? Does this sleep occur in a stable, but delayed time period in relation to what is desired or socially acceptable?
  3. Have you had this kind of stable but delayed sleep time for at least seven days?

If you answered “yes” to these questions, then you may have delayed sleep phase disorder.

It is also important to know if there is something else that is causing your sleep problems. They may be a result of one of the following:

  • Another sleep disorder
  • A medical condition
  • Medication use
  • A mental health disorder
  • Substance abuse

Delayed sleep phase syndrome. (2013, december 8). Retrieved from

Townsend, R. (2005, october 21). Delayed sleep phase. Retrieved from

America sleep, A. (2007, September). Delayed sleep phase syndrome. Retrieved from

Ivy, E. (n.d.). causes of delayed sleep phase syndrome. Retrieved from

Important things to know about delayed sleep phase syndrome

• If you have DSPS, your body wants to go to sleep

and wake up later than normal

• People with DSPS don't want to sleep for longer or

less than the average person

• DSPS is a problem with your body clock

• You can have DSPS at any age, but it happens

more in teenagers

• Using a computer close to bedtime can make DSPS


• Getting up at a regular time and bright light in the

morning can help

• There is a link between DSPS, depression and


Delayed Sleep Phase Syndrome