失眠症的发病率资料显示了这种症状的危害程度，许多专家都研究了这个问题，但估测失眠症的发病率和持续患病的情况的调查表和研究方法不同，并且对失眠症的定义也不统一。但无论怎样，所有的流行病研究都表明，失眠症是一种常见现象。盖洛普组织对美国成年代表性人群的两项调 The incidence of insomnia data show the extent of the harm of this symptom, many experts have studied this issue, but to assess the incidence of insomnia and continued prevalence of the questionnaire and research methods are different, and insomnia The definition is not uniform. But no matter what, all the epidemiological studies have shown that insomnia is a common phenomenon. Gallup Organization of the United States representative of the adult population of the two tune