The emotional trauma caused by insomnia, sudden shocks caused by major mood swings, loss, panic, resulting in sleep every night.

被情志所伤引起失眠，突然受到重大事件的冲击造成情绪不稳、失落、惊慌，以致夜夜难眠。

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If you have been feeling down for about a month or are experiencing symptoms such as insomnia or the need for much more sleep and a loss or increase in appetite, you might be suffering from depression and should seek the help of a professional, suggests Grayson.

CNN: Society's stresses: Cause for depression in women