The causes of insomnia and dreaminess are complex, both social and personal. They can be the result of normal ageing or caused by disease factors, such as high blood pressure, diabetes, stroke and other diseases; bad sleep habits such as drinking strong tea, smoking and doing strenuous activities before going to bed; and congenital withdrawn and sentimental personalities.
In addition, when large social and family changes occur, it is more likely to affect the psyche and affect sleep, thus leading to insomnia and dreaminess.