Chapter Eleven
Summary
Sleep disturbances are common complaints in many physician and therapist’s offices. The various forms of
insomnia include initial insomnia, or trouble falling asleep; middle insomnia, or intermittent awakening throughout
the night; or terminal insomnia or awakening about two hours before one’s normal wake time. These forms of insomnia
are common in both anxiety and depressive illness.
There are five distinct stages of sleep. Stages one and two are the light stages, but three, four and REM
provide the restorative stages needed to feel rested and alert during the day. Serotonin and norepinephrine are
necessary to obtain and maintain sleep. Patients with anxiety and/or depressive disorders experience depleted levels
of these neurotransmitters, and therefore, often have sleep problems. Some view stage five not as a distinct stage per
se, but as part of stage one when an individual progresses through the night. When a person cycles from one to stage
four and back to stage one, he/she experiences a distinct period of REM, and on each subsequent cycle of REM, it
increases in length throughout the night.
Evaluating sleep disturbances involves careful assessment, and the use of a sleep study. Various other causes
of sleep disturbance can include physical illness, and various other sleep disorders like Obstructive Sleep Apnea,
bruxism, restless leg syndrome, (RLS), periodic limb movement disorder or PLMD, and narcolepsy. Sleep studies
Specific Discussion Questions:
1. What are the various types of insomnia and how are they different?
2. Explain the stages of sleep and how poor sleep interferes with functioning.
3. What is measured in a typical sleep study and what types of conditions do they rule–out?
4. Explore some of the other physical and substance use disorders that interfere with sleep.
Possible True/False Questions:
1. In a study of more than 1,000 people, 43% reported problems with initial insomnia.
2. There are three distinct stages of sleep.
3. About 50% of our time is spent in stages 1 and 2.
4. Serotonin is necessary to help maintain sleep.
5. Patients with only terminal insomnia are more likely to have an affective disorder, as opposed to an anxiety
disorder.
6. Benzos are safe to use and may be used for months without any real concerns for tolerance.
7. Since Ambien has a shorter half life than Restoril, it is more likely to wear-off by morning.