What is Insomnia?
Insomnia is difficulty getting to sleep or staying asleep for long enough to feel refreshed the next morning, even though you've had enough opportunity to sleep.With insomnia, you usually awaken feeling unrefreshed, which takes a toll on your ability to function during the day. Insomnia can sap not only your energy level and mood but also your health, work performance and quality of life.
How much sleep is enough varies from person to person. Most adults need seven to eight hours a night.Many adults experience insomnia at some point, but some people have long-term (chronic) insomnia. Insomnia may be the primary problem, or it may be secondary due to other causes, such as a disease or medication.
Types of Insomnia
There are two types of insomnia: primary insomnia and secondary insomnia.
- Primary insomnia: Primary insomnia means that a person is having sleep problems that are not directly associated with any other health condition or problem.
- Secondary insomnia: Secondary insomnia means that a person is having sleep problems because of something else, such as a health condition (like asthma, depression, arthritis, cancer, or heartburn);pain; medication they are taking; or a substance they are using (like alcohol).
Symptoms of Insomnia
These include:
- Difficulty falling asleep at night
- Awakening during the night
- Awakening too early
- Not feeling well rested after a night's sleep
- Daytime tiredness or sleepiness
- Irritability, depression or anxiety
- Difficulty paying attention, focusing on tasks or remembering
- Increased errors or accidents
- Tension headaches
- Distress in the stomach and intestines (gastrointestinal tract)
- Ongoing worries about sleep
Someone with insomnia will often take 30 minutes or more to fall asleep and may get only six or fewer hours of sleep for three or more nights a week over a month or more.
Causes of Insomnia
Common causes of Insomnia include:
- Stress. Concerns about work, school, health or family can keep your mind active at night, making it difficult to sleep. Stressful life events — such as the death or illness of a loved one, divorce, or a job loss — may lead to insomnia.
- Anxiety. Everyday anxieties as well as more-serious anxiety disorders, such as post-traumatic stress disorder, may disrupt your asleep. Worry about being able to go to sleep can make it harder to fall asleep.
- Depression. You might either sleep too much or have trouble sleeping if you're depressed. Insomnia often occurs with other mental health disorders as well.
- Medical conditions. If you have chronic pain, breathing difficulties or a need to urinate frequently, you might develop insomnia. Examples of conditions linked with insomnia include arthritis, cancer, heart failure, lung disease, gastroesophageal reflux disease (GERD), overactive thyroid, stroke, Parkinson's disease and Alzheimer's disease.
- Change in your environment or work schedule. Travel or working a late or early shift can disrupt your body's circadian rhythms, making it difficult to sleep. Your circadian rhythms act as an internal clock, guiding such things as your sleep-wake cycle, metabolism and body temperature.
- Poor sleep habits. Poor sleep habits include an irregular sleep schedule, stimulating activities before bed, an uncomfortable sleep environment, and use of your bed for activities other than sleep or sex.
- Medications. Many prescription drugs can interfere with sleep, including some antidepressants, heart and blood pressure medications, allergy medications, stimulants (such as Ritalin), and corticosteroids. Many over-the-counter (OTC) medications — including some pain medication combinations, decongestants and weight-loss products — contain caffeine and other stimulants.
- Caffeine, nicotine and alcohol. Coffee, tea, cola and other caffeine-containing drinks are well-known stimulants. Drinking coffee in the late afternoon and later can keep you from falling asleep at night. Nicotine in tobacco products is another stimulant that can cause insomnia. Alcohol is a sedative that may help you fall asleep, but it prevents deeper stages of sleep and often causes you to awaken in the middle of the night.
- Eating too much late in the evening. Having a light snack before bedtime is OK, but eating too much may cause you to feel physically uncomfortable while lying down, making it difficult to get to sleep. Many people also experience heartburn, a back flow of acid and food from the stomach into the esophagus after eating, which may keep you awake.
Insomnia and Aging
Insomnia becomes more common with age. As you get older, you may experience:
- A change in sleep patterns. Sleep often becomes less restful as you age, and you may find that noise or other changes in your environment are more likely to wake you. With age, your internal clock often advances, which means you get tired earlier in the evening and wake up earlier in the morning. But older people generally still need the same amount of sleep as younger people do.
- A change in activity. You may be less physically or socially active. A lack of activity can interfere with a good night's sleep. Also, the less active you are, the more likely you may be to take a daily nap, which can interfere with sleep at night.
- A change in health. The chronic pain of conditions such as arthritis or back problems as well as depression, anxiety and stress can interfere with sleep. Older men often develop noncancerous enlargement of the prostate gland (benign prostatic hyperplasia), which can cause the need to urinate frequently, interrupting sleep. In women, menopausal hot flashes can be equally disruptive.
- Other sleep-related disorders, such as sleep apnea and restless legs syndrome, also become more common with age. Sleep apnea causes you to stop breathing periodically throughout the night. Restless legs syndrome causes unpleasant sensations in your legs and an almost irresistible desire to move them, which may prevent you from falling asleep.
- More medications. Older people typically use more prescription drugs than younger people do, which increases the chance of insomnia caused by a medication.
Sleep problems may be a concern for children and teenagers as well. However, some children and teens simply have trouble getting to sleep or resist a regular bedtime because their internal clocks are more delayed. They want to go to bed later and sleep later in the morning.
Risk Factors
Nearly everyone has an occasional sleepless night. But your risk of insomnia is greater if:
- You're a woman. Women are much more likely to experience insomnia. Hormonal shifts during the menstrual cycle and in menopause may play a role. During menopause, night sweats and hot flashes often disturb sleep. Insomnia is also common with pregnancy.
- You're older than age 60. Because of changes in sleep patterns and health, insomnia increases with age.
- You have a mental health disorder. Many disorders — including depression, anxiety, bipolar disorder and post-traumatic stress disorder — disrupt sleep. Early-morning awakening is a classic symptom of depression.
- You're under a lot of stress. Stressful events can cause temporary insomnia. And major or long-lasting stress, such as the death of a loved one or a divorce, can lead to chronic insomnia. Being poor or unemployed also increases the risk.
- You work night or changing shifts. Working at night or frequently changing shifts increases your risk of insomnia.
- You travel long distances. Jet lag from traveling across multiple time zones can cause insomnia.
Complications of Insomnia
Sleep is as important to your health as a healthy diet and regular exercise. Whatever your reason for sleep loss, insomnia can affect you both mentally and physically. People with insomnia report a lower quality of life compared with people who are sleeping well.
Complications of insomnia may include:
- Lower performance on the job or at school
- Slowed reaction time while driving and higher risk of accidents
- Psychiatric problems, such as depression or an anxiety disorder
- Overweight or obesity
- Irritability
- Increased risk and severity of long-term diseases or conditions, such as high blood pressure, heart disease and diabetes
- Substance abuse
Seeking Treatment for Insomnia
If you're having sleep problems, you'll likely start by talking to your primary care doctor.These are some of the things you can do as you prepare to do so:
- Ask if there's anything you need to do in advance, such as keeping a sleep diary. In a sleep diary, you record your sleep patterns — bedtime, number of hours slept, nighttime awakenings and awake time — as well as your daily routine, naps and how you feel during the day.
- Make a list of any symptoms you're experiencing, including any that may seem unrelated to the reason for the appointment.
- Take key personal information, including new or ongoing health problems, major stresses or recent life changes.
- Make a list of all medications, vitamins, or herbal or other supplements that you're taking, including dosages. Let your doctor know about anything you've taken to help you sleep.
- Take your bed partner along, if possible. Your doctor may want to talk to your partner to learn more about how much and how well you're sleeping.
- Make a list of questions to ask your doctor, to make the most of your appointment time.
Some basic questions to ask your doctor include:
- What is likely causing my insomnia?
- What's the best treatment?
- I have these other health conditions. How can I best manage them together?
- Should I go to a sleep clinic? Will my insurance cover it?
- Are there any brochures or other printed material that I can have? What websites do you recommend?
Lifestyle and Home Remedies
No matter what your age, insomnia usually is treatable. The key often lies in changes to your routine during the day and when you go to bed. Good sleep habits promote sound sleep and daytime alertness. These tips may help.
Basic tips:
- Exercise and stay active. Activity helps promote a good night's sleep. Get at least 20 to 30 minutes of vigorous exercise daily at least five to six hours before bedtime.
- Check your medications. If you take medications regularly, check with your doctor to see if they may be contributing to your insomnia. Also check the labels of OTC products to see if they contain caffeine or other stimulants, such as pseudoephedrine.
- Avoid or limit naps. Naps can make it harder to fall asleep at night. If you can't get by without one, try to limit a nap to no more than 30 minutes and don't nap after 3 p.m.
- Avoid or limit caffeine and alcohol and don't use nicotine. All of these can make it harder to sleep. Avoid caffeine after lunchtime. Avoiding alcohol can help prevent restless sleep and frequent awakenings.
- Don't put up with pain. If a painful condition bothers you, make sure the pain reliever you take is effective enough to control pain while you're sleeping.
- Stick to a sleep schedule. Keep your bedtime and wake time consistent from day to day, including on weekends.
At bedtime:
- Avoid large meals and beverages before bed. A light snack is fine. But avoid eating too much late in the evening to reduce the chance of gastroesophageal reflux disease (GERD) and improve sleep. Drink less before bedtime so that you won't have to urinate as often.
- Use your bed and bedroom only for sleeping or sex. Don't read, work or eat in bed. Avoid TV, computers, video games, smart phones or other screens just before bed, as the light can interfere with your sleep cycle.
- Make your bedroom comfortable for sleep. Close your bedroom door or create a subtle background noise, such as a running fan, to help drown out other noises. Keep your bedroom temperature comfortable, usually cooler than during the day, and dark. Don't keep a computer or TV in your bedroom.
- Hide the bedroom clocks. Set your alarm so that you know when to get up, but then hide all clocks in your bedroom, including your wristwatch and cellphone, so you don't worry about what time it is.
- Find ways to relax. Try to put your worries and planning aside when you get into bed. A warm bath or a massage before bedtime can help prepare you for sleep. Create a relaxing bedtime ritual, such as reading, soft music, breathing exercises, yoga or prayer.
- Avoid trying too hard to sleep. The harder you try, the more awake you'll become. Read in another room until you become very drowsy, then go to bed to sleep.
- Get out of bed when you're not sleeping. Sleep as much as you need to feel rested, and then get out of bed. If you can't sleep, get out of bed after 20 minutes and do something relaxing, such as reading. Then try again to get to sleep.
For more information, please visit the following websites:
http://sleepfoundation.org/sleep-disorders-problems/insomnia
http://www.webmd.com/sleep-disorders/guide/insomnia-symptoms-and-causes
http://www.nhs.uk/conditions/insomnia/pages/introduction.aspx
http://www.mayoclinic.org/diseases-conditions/insomnia/basics/definition/con-20024293
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