The following symptoms can be seen in the early stage of insomnia: 1.difficulty in falling asleep: Patients can adjust in various ways, but still cannot easily fall asleep; 2.early awakening: It can appear that waking up in the middle of the night is not easy to fall back to sleep, or waking up earlier in the morning; 3.more frequent night wakings: There is no other reason to wake up frequently in the night, and you can fall asleep after waking up, but each sleep time is short; 4.multiple dreams: Sleep is particularly light, dreams are particularly vivid, or nightmares wake up; 5.light sleep is easily disturbed: You can be woken up by the slightest sound, or light or light changes.