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DURATION OF INSOMNIA: TRANSIENT OR CHRONIC

Mental disorders or comorbidities are commonly associated with insomnia. Ohayon et al.13 surveyed the general population and found among insomniacs that 30.1% and 23% had previously sought help for anxiety and depression, respectively. Similarly, in primary care patients with severe insomnia, a high prevalence of psychiatric diagnoses was found: 21.7% of severe insomniacs had depression, 7.2% neurosis/personality disorders, 10.2% acute psychological distress, 4.6% alcohol or drug abuse, 5.6% psychosomatic disorders, and 1% psychosis.14