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INSOMNIA
4+16 marks

SYMPTOMS
Waking in the night (most common in older people)

Not feeling refreshed after sleep

Not being able to function normally in the day

Irritable and tired, difficult to concentrate

Diagnosis of insomnia is not based on the number of hours slept but when the
resulting daytime…

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He found clear abnormalities in Insomnia is difficult to identify in the
insomniacs, including a consistent and first place, let alone find its cause for each
significant decrease in blood flow. individual patient.

This suggests that insomnia may be Lab recording provide little relevant
associated with abnormal central information for…

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Many cases of insomnia occur due to another condition (secondary insomnia). For example, physical
changes: hormonal changes in women, these include PMS, menstruation, pregnancy and menopause.

Mornin et al (1999) found that 40% of patients with insomnia also had a psychological disorder e.g
depression, posttraumatic stress disorder. Other medical conditions…

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psychologists.


DIATHESIS STRESS MODEL

This suggests that suffers have a genetic disposition to developing the disorder which is
then triggered by something in the environment. This explanation also brings up the nature
nurture debate. This questions whether it is the genetics which you are born with, or
whether the environment…

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It is clear that there is a genetic component to narcolepsy. In dogs, it is clear that one gene can pass on
the trait, whereas in humans it does not, as in humans if one twin has narcolepsy there is only a 30%
chance of the other twin developing it.…

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