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Insomnia, also known as sleeplessness, is a sleep disorder where people have trouble sleeping. [1] [11] They may have difficulty falling asleep, or staying asleep for ...
Insomnia: Insomnia is defined as the subjective perception of difficulty with sleep initiation, duration, consolidation, or quality that occurs despite adequate opportunity for sleep, and that results in some form of daytime impairment. [4] Adjustment sleep disorder (acute insomnia) 307.41 F 51.02 Psychophysiological insomnia 307.42 F 51.04
Psychophysiological insomnia is anxiety-induced. Idiopathic insomnia generally begins in childhood and lasts for the rest of a person's life. It's suggested that idiopathic insomnia is a neurochemical problem in a part of the brain that controls the sleep-wake cycle, resulting in either under-active sleep signals or over-active wake signals.
Onset insomnia is characterized by difficulty falling asleep at night, leaving people tossing and turning for hours. Maintenance insomnia involves the inability to stay asleep throughout the night ...
Insomnia is the most common sleep problem, with many adults reporting occasional insomnia, and 10–15% reporting a chronic condition. [117] Insomnia can have many different causes, including psychological stress, a poor sleep environment, an inconsistent sleep schedule, or excessive mental or physical stimulation in the hours before bedtime ...
Insomnia disorder (primary insomnia), chronic difficulty in falling asleep or maintaining sleep when no other cause is found for these symptoms. Insomnia can also be comorbid with or secondary to other disorders. Kleine–Levin syndrome, a rare disorder characterized by persistent episodic hypersomnia and cognitive or mood changes. [84]
Middle-of-the-night insomnia, or "sleep maintenance insomnia", also called terminal insomnia in contrast with "initial insomnia", is characterized by having difficulty returning to sleep after waking up during the night or very early in the morning. Initial or "sleep-onset" insomnia consists of having difficulty falling asleep at the beginning ...
Fatal insomnia is an extremely rare neurodegenerative prion disease that results in trouble sleeping as its hallmark symptom. [2] The majority of cases are familial ( fatal familial insomnia [FFI]), stemming from a mutation in the PRNP gene, with the remainder of cases occurring sporadically ( sporadic fatal insomnia [sFI]).