Insomnia is a common sleep disorder that can make people have trouble falling asleep and staying asleep. It can be both acute and chronic, and, if not treated, insomnia can take its toll both mentally and physically because sleep is critical to a person’s general health.
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Insomnia is a common sleep disorder in which people have trouble falling and staying asleep. People with insomnia may wake up early, feel groggy and lack energy. Insomnia is roughly twice as common in women than in men, and is more often seen in older than younger people.
Common causes of insomnia include emotional stress; fears or anxiety; depression; medical conditions, such as chronic pain; medications, such as antidepressants; an irregular sleep schedule; working nights; eating too close to bedtime; frequent travel to different time zones; and use of alcohol, caffeine and nicotine.
There are two types of insomnia: primary insomnia (not associated with another health condition) and secondary insomnia (caused by something else, such as pain, alcohol use, etc.). Insomnia also differs in its duration. Insomnia can be acute (one night to a few weeks) or chronic (at least three nights a week for a month or more).