Celia Green suggested a distinction should be made between two types of<unk> : Type 1 Type 1 is the more common, in which the dreamer seems to wake up, but not necessarily in realistic surroundings, that is, not in their own bedroom. A pre-lucid dream may ensue. More commonly, dreamers will believe they have awakened, and then either wake up for real in their own bed or "fall back asleep" in the dream. A common<unk>  is a "late for work" scenario. A person may "wake up" in a typical room, with most things looking normal, and realize they overslept and missed the start time at work or school. Clocks, if found in the dream, will show time indicating that fact. The resulting panic is often strong enough to truly awaken the dreamer (much like from a nightmare). Another common Type 1 example of<unk>  can result in bedwetting. In this scenario the dreamer has had a<unk>  and while in the state of dream has performed all the traditional behaviors that precede urinatingarising from bed, walking to the bathroom, and sitting down on the toilet or walking up to a urinal. The dreamer may then urinate and suddenly wake up to find they have wet themselves. Type 2 The type 2<unk>  seems to be considerably less common. Green characterized it as follows: Charles McCreery drew attention to the similarity between this description and the description by the German psychopathologist Karl Jaspers (1923) of the so-called "primary delusionary experience" (a general feeling that precedes more specific delusory belief). Jaspers wrote: McCreery suggests this phenomenological similarity is not coincidental and results from the idea that both phenomena, the Type 2<unk>  and the primary delusionary experience, are phenomena of sleep. He suggests that the primary delusionary experience, like other phenomena of psychosis such as hallucinations and secondary or specific delusions, represents an intrusion into waking consciousness of processes associated with stage 1 sleep. It is suggested that the reason for these intrusions is that the psychotic subject is in a state of hyper-arousal, a state that can lead to what Ian Oswald called "micro-sleeps" in waking life. Subjects may also experience sleep paralysis.
False awakening
Fatal insomnia
Excited delirium
Hypnoid state
Masked depression
Emergence delirium
Cholinergic crisis
Heat syncope