Bob
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Here's a relevant extract re sleep...
Their conclusions, re unrefreshing sleep, seem to be based on the evidence of a 2013 study by Jason et al. which found that 92-99% of ME patients reported unrefreshing sleep. See the bottom of this post for details.
Starting on page 87 of full report...
This is the reference:
Jason, L. A., M. Sunnquist, A. Brown, M. Evans, S. Vernon, J. Furst, and V. Simonis. 2013b.
Examining case definition criteria for chronic fatigue syndrome and myalgic encephalomyelitis.
Fatigue: Biomedicine, Health & Behavior 2(1).
Their conclusions, re unrefreshing sleep, seem to be based on the evidence of a 2013 study by Jason et al. which found that 92-99% of ME patients reported unrefreshing sleep. See the bottom of this post for details.
Starting on page 87 of full report...
IOM report said:Patients with ME/CFS frequently experience sleep-related problems
such as insomnia, sleep disturbances, unrefreshing sleep, and nonrestorative
sleep (FDA, 2013; Fossey et al., 2004). These symptoms are included in all
existing ME/CFS case definitions and diagnostic criteria (see Chapter 3).
Unrefreshing sleep, or feeling as tired upon waking as before going to bed,
is among the most common symptoms reported by ME/CFS patients, and
only a small percentage of patients diagnosed with ME/CFS fail to report
some type of sleep dysfunction (Carruthers et al., 2003; IACFS/ME, 2014;
Jason et al., 2013b). This section summarizes the evidence on sleep-related
signs and symptoms in ME/CFS reviewed by the committee to determine
whether such symptoms should be a component of its recommended diagnostic
criteria for ME/CFS.
ME/CFS patients are more likely than healthy controls to experience
sleep-related symptoms occurring at least half of the time and of at least
moderate severity (see Figure 4-2) (Jason et al., 2013b). Although sleeprelated
symptoms also are reported by healthy persons and by chronically
fatigued persons who do not fulfill ME/CFS criteria, a greater percentage
of people fulfilling ME/CFS criteria report unrefreshing sleep, sleep disturbances,
and difficulties falling asleep or waking up early in the morning
(Komaroff et al., 1996a; Krupp et al., 1993; Nisenbaum et al., 2004) relative
to these other groups.
Sleep-related complaints may change throughout the course of the illness.
For example, one study found that in the first few months of the illness,
ME/CFS patients complain of hypersomnia, but as the disease progresses,
they have trouble staying asleep (Morriss et al., 1997). A cross-sectional
study of randomly selected patients found that sleep-related symptoms
may become less frequent over the course of the illness (Nisenbaum et al.,
2003); however, this may be due to behavioral adaptation or changes in
sleep medication.
IOM report said:It is important to consider frequency and severity thresholds when
assessing subjective sleep complaints. In a study using the DePaul Symptom
Questionnaire, for example, 65 percent of healthy controls reported
unrefreshing sleep that occurred with mild severity at least a little of the
time, yet only 16 percent of healthy controls reported unrefreshing sleep
that occurred with moderate severity at least half of the time (Jason et al.,
2013b). The percentages of ME/CFS patients reporting unrefreshing sleep
at the same thresholds were 99 and 92 percent, respectively.
This is the reference:
Jason, L. A., M. Sunnquist, A. Brown, M. Evans, S. Vernon, J. Furst, and V. Simonis. 2013b.
Examining case definition criteria for chronic fatigue syndrome and myalgic encephalomyelitis.
Fatigue: Biomedicine, Health & Behavior 2(1).
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