Insomnia is a common sleep problem for adults, affecting millions worldwide.A person suffering from insomnia has difficulty falling asleep or staying asleep, even when he or she has the chance to do so.
Insomnia is characterised based on duration:
Acute insomnia (short term) is brief and often happens because of life circumstances (for example, before an exam or after receiving stressful or bad news). Many people experience this type of passing sleep disruption, and it tends to resolve without any treatment.
Chronic insomnia (ongoing) is disrupted sleep that occurs at least three nights per week and lasts at least three months. Chronic insomnia disorders can have many causes:
- Changes in the environment
- Unhealthy sleep habits
- Shift work
- Other clinical disorders
- Certain medications, which could lead to a long-term pattern of insufficient sleep.
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