What Is Insomnia?
Insomnia is a condition where people have trouble getting to sleep or staying asleep. You can suffer from this sleep disorder on a short- or long-term basis.
Chronic insomnia is when you have trouble sleeping at least three days per week for more than three months. About 10% of adults have chronic insomnia.
It causes daytime fatigue, attention issues, and other health problems.
People with short-term insomnia have similar symptoms but for less than three months, and often less than three times a week. Between 15% and 20% of adults have short-term insomnia in any given year.
What Causes Insomnia?
Short-term insomnia causes
Stressful life events that may trigger a bout of short-term insomnia include:
- A divorce.
- The death of a loved one.
- An illness.
- The loss of a job.
Chronic insomnia causes
Stress and anxiety about not sleeping can further create a cycle of being unable to sleep, leading to chronic insomnia.
Other common causes of chronic insomnia include:
- An irregular sleep schedule, such as from shift work or travel.
- Poor sleep habits, like using electronics or drinking alcohol before bedtime.
- Mental health issues, like anxiety, depression, and bipolar disorder.
- Physical illness and pain, which can disrupt sleep.
- Side effects from medicine, such as blood pressure drugs, antidepressants, and stimulants.
- Neurological problems, like Alzheimer's disease, which throw off the body's wake-sleep cycle.
- Other sleep disorders, such as obstructive sleep apnea (OSA) and restless legs syndrome (RLS).
What Are Risk Factors and Complications of Insomnia?
Certain factors make insomnia more likely, such as:
- Age. The risk of insomnia rises with age.
- Genetics. If you have a family history of insomnia, you're more likely to have it.
- Sex. Women are more at risk than men.
- Lifestyle. Shift work, drinking caffeine or alcohol near bedtime, or using electronics at night.
- Stress or worry.
- Medical and mental health disorders. Heart disease, asthma, depression, and anxiety raise the risk.
Complications of insomnia
Chronic insomnia can cause other health problems.
It can affect your:
- Memory.
- Mood.
- Productivity.
- Motivation.
- Ability to concentrate.
Lack of sleep can also lead to accidents.