What is insomnia?

Insomnia is a common sleep problem that can affect your quality of life. People with insomnia have trouble falling asleep or staying asleep. They may wake up during the night or wake up too early the next morning.

Your sleep problems may come and go, or they may be ongoing.

• A short-term sleep problem is often linked to short-term stress. This short-term insomnia can last for days to weeks. It often gets better in less than a month.
• A chronic sleep problem is ongoing. This is called chronic insomnia. It is often a symptom of another health problem, such as depression or chronic pain. Chronic insomnia is less common than short-term sleep problems.

What causes insomnia?

There are many things that can cause sleep problems. Insomnia may be caused by:

• Stress . Stress can be caused by fear about a single event, such as giving a speech. Or you may have ongoing stress, such as worry about work or school.
• Depression, anxiety , and other mental or emotional conditions.
• Poor sleep habits , such as watching TV in bed or not having a regular bedtime schedule. If you have trouble sleeping, you may worry about being able to fall asleep. This can make the problem worse.
• Changes in your sleep habits or surroundings. This includes changes that happen where you sleep, such as noise, light, or sleeping in a different bed. It also includes changes in your sleep pattern, such as having jet lag or working a late shift.
• Other health problems , such as pain, breathing problems, and restless legs syndrome.
• Stimulants , such as tobacco and caffeine, as well as certain medicines, alcohol, and drugs.
• Lack of regular exercise .¹

What are the symptoms?

The symptoms of insomnia are different for each person. People with insomnia may:

• Have trouble falling asleep. This can mean lying in bed for up to an hour or more, tossing and turning, waiting to fall asleep.
• Wake up during the night and have trouble going back to sleep.
• Wake up too early in the morning.
• Feel tired when they wake up, like they didn't get enough sleep.
• Feel grouchy, sleepy, or anxious, and be unable to get things done during the daytime.

How is insomnia diagnosed?

Insomnia is not a disease, and no test can diagnose it. But when you can't sleep well, it often has to do with some other cause. Your doctor will probably assess your current health and ask about any health problems you have had and any medicines you are taking.

Sometimes a doctor will do a physical exam, blood tests, and, in some cases, sleep studies to help find out if you have a health problem that may be causing the insomnia.