Types of Insomnia
Transient insomnia, lasting a few days to a week, can be triggered by many things (e.g., excess environmental noise, medications, and extreme temperatures). One type of transient insomnia is jet lag, in which traveling through time zones causes a temporary disruption of the body's circadian rhythm (NHLBI 1995).
Acute insomnia may last for several weeks. Common triggers include emotional stress or conflict, environmental changes, or anxiety associated with going to bed. Acute insomnia can also be triggered by the same things that trigger transient insomnia (American Academy of Sleep Medicine 2001; Ellis 2012).
Chronic insomnia, which may last for months or years, can have profound effects on health, quality of life, productivity, and safety (Roth 2003).