Primary insomnia is difficulty getting to sleep or staying asleep, or having non-refreshing sleep for at least 1 month.
The term primary means that the insomnia is not caused by any known physical or mental condition.
Alternative Names
Insomnia - psychophysiological (learned); Chronic insomnia
Causes, incidence, and risk factors
Insomnia is caused by many different things. Anxiety, stress, coffee, and alcohol are the most common causes of insomnia.
About 25% of elderly people and about 10% of the general population have insomnia.
Secondary insomnia is insomnia caused by a underlying medical condition.
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