<unk> , also known as dream anxiety<unk> , is a sleep<unk>  characterized by frequent<unk> s. The<unk> s, which often portray the individual in a situation that jeopardizes their life or personal safety, usually occur during the REM stages of sleep. Though most people have experienced at least one<unk>  during their life, subjects with<unk>  experience them with a greater frequency. The<unk> 's DSM-IV number is 307.47.<unk> s are included in the parasomnias, which cover all unusual behaviours during sleep.<unk> s can be confused with sleep terror<unk> s. The difference is that after a sleep terror episode, the patient wakes up with more dramatic symptoms than for a<unk> , such as screaming and crying. Furthermore, they don't remember the reason of the fear, while a patient with a<unk>  remembers every detail of the dream. Finally, the sleep terrors usually occur during NREM Sleep.<unk> s also have to be distinguished from bad dreams, which are less emotionally intense. Furthermore,<unk> s contain more stories of aggression than bad dreams and more unhappy endings. Finally, people experiencing<unk> s feel more fear than for bad dreams. The treatment depends whether or not there is a comorbid PTSD diagnosis. About 4% of American adults are affected.
Nightmare disorder
Exploding head syndrome
Idiopathic hypersomnia
Listener fatigue
Advanced sleep phase disorder
Circadian rhythm sleep disorder
Jurosomatic illness
Interictal dysphoric disorder