Insomnia: A condition in which the quality of sleep lasting for a long time is unsatisfactory.
According to this definition, which of the following conditions can be considered for diagnosis of insomnia?
Grandma Wang is 71 years old this year. She only sleeps for 4-5 hours a day. She wakes up before dawn in the morning and cannot fall asleep. She has been like this since she retired. It has been more than 10 years.