A 72-year-old woman surnamed Lin in Xiamen, Fujian Province, southeast China, suffered from a sleep disorder in the first half of this year. She had difficulty falling asleep and would wake up early in the morning. As a result, she slept only three to four hours and subsequently felt tired throughout the day.
Before the issue arose, she used to go out every morning to buy vegetables and then talk to neighbors and friends in the park. She also did a lot of housework and gave her home a good scrub every day, without fail. But after the disorder began, she rarely went out and became rather listless. Lin’s husband