Those with<unk> s experience abnormal sleep architecture. The impact of having a<unk>  during the night has been found to be very similar to that of insomnia. This is thought to be caused by frequent nocturnal awakenings and fear of falling asleep.<unk>  disorder symptoms include repeated awakenings from the major sleep period or naps with detailed recall of extended and extremely frightening dreams, usually involving threats to survival, security, or self-esteem. The awakenings generally occur during the second half of the sleep period.
Nightmare
Night terror  Night terror  1
Nightscout
Twilight sleep
Sleep onset
Mental health day
Yawn
Sleep sex