Published in Mental Health Weekly Digest, April 14th, 2008
The study, conducted by Jules Angst, MD, of Zurich University Psychiatric Hospital in Switzerland, focused on 591 young adults, whose psychiatric, physical, and sleep symptoms were assessed with six interviews spanning 20 years. Four duration-based subtypes of insomnia were distinguished: one-month insomnia associated with significant distress, two-to-three-week insomnia, recurrent brief insomnia, and occasional brief insomnia.
According to the results, the annual...
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