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If you suffer from depression and insomnia they may be the reason for nightmares that occur while you are sleeping.
A new study suggests that the symptoms of insomnia and depression are the strongest predictors of frequent nightmares. Results show that 3.9 per cent of participants reported having frequent nightmares during the previous 30 days, including 4.8 per cent of women and 2.9 per cent of men. Frequent nightmares were reported by 28.4 per cent of participants with severe depressive symptoms and 17.1 percent of those with frequent insomnia.
"Our study shows a clear connection between well-being and nightmares," said lead author Nils Sandman, a researcher in the Centre for Cognitive Neuroscience at the University of Turku in Finland. "This is most evident in the connection between nightmares and depression, but also apparent in many other analyses involving nightmares and questions measuring life satisfaction and health."
The American Academy of Sleep Medicine reports that nightmares are vivid, realistic and disturbing dreams typically involving threats to survival or security, which often evoke emotions of anxiety, fear or terror. A nightmare disorder may occur when repeated nightmares cause distress or impairment in social or occupational functioning.
The study was a joint effort of the University of Turku and the Finnish National Institute of Health and Welfare. Participants were 13,922 adults between 25 and 74 years of age. The surveys involved a questionnaire that was mailed to the participants and a health examination at the local primary health care center, where the completed questionnaire was returned and checked by a nurse. Occasional nightmares in the past 30 days were reported by more than 45 per cent of participants, and 50.6 per cent reported no nightmares at all.
"It might be possible that nightmares could function as early indicators of onset of depression and therefore have previously untapped diagnostic value," he said. "Also, because nightmares, insomnia and depression often appear together, would it be possible to treat all of these problems with an intervention directed solely toward nightmares?"
Sandman noted that the cross-sectional study did not allow for an examination of causality. However, he suggested that the results do raise intriguing possibilities worth investigating in the future.
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