Circadian Rhythm Sleep Disorders and Treatments

What is a circadian rhythm sleep disorder?

• A disorder where a person cannot sleep when sleep is desired, needed, or expected

• A disorder where a person sleeps too much

• A disorder where a person never feels sleepy

• A disorder caused only by environmental factors

Fill in the blank: Delayed Sleep Phase Syndrome (DSPS) is a condition in which the major sleep episode is ______ in relation to the desired sleep time or what is considered a conventional time.

• delayed

• advanced

• shortened

• fragmented

Which of the following is NOT a prominent symptom of DSPS?

• A) Sleep-onset insomnia

• B) Difficulty awakening at the desired or necessary time

• C) Excessive sleepiness

• D) Early sleep onset

What is the estimated prevalence of DSPS among adolescents and young adults?

• 1-2%

• 7-15%

• 20-30%

• 50%

Fill in the blank: Advanced Sleep Phase Disorder (ASPD) is characterised by advance of the major sleep episode to an ______ time compared to desired or conventional times.

• earlier

• later

• shorter

• irregular

The main symptoms of Advanced Sleep Phase Disorder (ASPD) are:

• Early evening sleepiness and early morning awakening

• Difficulty falling asleep and staying asleep

• Frequent nightmares and restless legs

• Irregular sleep-wake patterns and excessive daytime sleepiness

ASPD is more common among older people than among adolescents and young adults.

• True

• False

Which sleep phase is most likely to result in difficulty waking up for school at 7am?

• Advanced sleep phase

• Normal sleep phase

• Delayed sleep phase

What are two main symptoms of shift work sleep disorder?

• Insomnia (trouble sleeping) and excessive sleepiness during times when alertness is needed.

• Fever and chills during work hours.

• Loss of appetite and weight gain.

• Headache and blurred vision during the night shift.

Fixed shift work schedules are generally easier to adapt to and cause fewer sleep disturbances than rotating schedules.

• True

• False