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More about Sleep Disorders:
Definition Causes and symptoms Diagnosis Treatment Alternative treatment Prognosis Resources |
The causes of sleep disorders have already been discussed with respect to the classification of these disorders.
The most important symptoms of sleep disorders are insomnia and sleepiness during waking hours. Insomnia is by far the more common of the two symptoms. It covers a number of different patterns of sleep disturbance. These patterns include inability to fall asleep at bedtime, repeated awakening during the night, and/or inability to go back to sleep once awakened.
— Rebecca J. Frey
