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Drowsiness

Show Alternative Names
Sleepiness - during the day
Hypersomnia
Somnolence

Drowsiness refers to feeling more sleepy than normal during the day. People who are drowsy may fall asleep when they do not want to or at times which can lead to safety concerns.

Considerations

Excessive daytime sleepiness (without a known cause) may be a sign of a sleep disorder.

Depression, anxiety, stress, and boredom can all contribute to excessive sleepiness. However, these conditions more often cause fatigue and apathy.

Causes

Drowsiness may be due to the following:

  • Long-term (chronic) pain
  • Diabetes
  • Having to work long hours or different shifts (nights, weekends)
  • Insomnia and other problems falling or staying asleep
  • Changes in blood sodium levels (hyponatremia or hypernatremia)
  • Medicines (tranquilizers, sleeping pills, antihistamines, certain painkillers, some psychiatric drugs)
  • Not sleeping long enough
  • Sleep disorders (such as sleep apnea and narcolepsy)
  • Too much calcium in your blood (hypercalcemia)
  • Underactive thyroid (hypothyroidism)

Sleep disorders - Animation

You tuck yourself under the covers, turn out the light, and look forward to eight hours of blissful slumber. But, after turning for hours you're still exhausted, and no closer to sleep than when you first got into bed. Let's talk today about sleep disorders. Sleep disorders fall into four basic categories. The scenario I described, in which you toss and turn because you can't fall asleep, is called insomnia. Another type of insomnia is when you wake up in the middle of the night and can't get back to sleep. Sometimes people get insomnia for a night or two because they're stressed out over a big meeting at work, or they're excited about an upcoming trip. Others can't sleep night after night, and that's called chronic insomnia. People with the second category of sleep disorders have a hard time staying awake during the day, even if they slept well the night before. This is called hypersomnia. Sometimes doctors can't find a cause for hypersomnia. But in many cases, a health condition like fibromyalgia, a thyroid problem, a disease like mononucleosis, obesity, or obstructive sleep apnea, can make you sleepy. If you notice a co-worker is nodding off in the middle of meetings, he might have narcolepsy, a sleep disorder that causes people to sleep uncontrollably at inappropriate times during the day. Narcolepsy isn't only embarrassing, it can be dangerous if you nod off behind the wheel of a car. A sleep rhythm problem means that you can't stick to a normal sleep schedule. Maybe you work the night shift at your job, or you're always traveling to different time zones and are constantly battling jet lag. Well, whatever the cause, the lack of a normal sleep pattern is called a sleep rhythm disorder. The good news is that you don't have to live on fewer hours of sleep, because there are decent treatments for sleep disorders. If you're struggling to sleep throughout the night, and dragging through the day as a result, talk to your doctor, who can refer you to a sleep specialist for an evaluation.

Home Care

You can relieve drowsiness by treating the cause of the problem. First, determine whether your drowsiness is due to depression, anxiety, boredom, or stress. If you are not sure, talk with your health care provider.

For drowsiness due to medicines, talk to your provider about switching or stopping your medicines. But, DO NOT stop taking or change your medicine without first talking to your provider.

Do not drive when drowsy.

What to Expect at Your Office Visit

Your provider will examine you to determine the cause of your drowsiness. You will be asked about your sleep patterns and health. Questions may include:

  • How well do you sleep?
  • How much do you sleep?
  • Do you snore?
  • Do you fall asleep during the day when you do not plan to nap (such as when watching TV or reading)? If so, do you awake feeling refreshed? How often does this happen?
  • Are you depressed, anxious, stressed, or bored?
  • What medicines do you take?
  • What have you done to try to relieve the drowsiness? How well did it work?
  • What other symptoms do you have?

Tests that may be done include:

Treatment depends on the cause of your drowsiness.

Review Date: 7/8/2023

Reviewed By

Linda J. Vorvick, MD, Clinical Professor, Department of Family Medicine, UW Medicine, School of Medicine, University of Washington, Seattle, WA. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

References

Avidan AY. Sleep and its disorders. In: Jankovic J, Mazziotta JC, Pomeroy SL, Newman NJ, eds. Bradley and Daroff's Neurology in Clinical Practice. 8th ed. Philadelphia, PA: Elsevier; 2022:chap 101.

Mansukhani MP, Kolla BP, St. Louis EK. Sleep disorders. In: Kellerman RD, Rakel DP, Heidelbaugh JJ, Lee EM, eds. Conn's Current Therapy 2023. Philadelphia, PA: Elsevier 2023:794-809.

Sharafkhaneh A, Hirshkowitz M. Evaluating sleepiness and fatigue. In: Kryger M, Roth T, Goldstein CA, Dement WC, eds. Principles and Practice of Sleep Medicine. 7th ed. Philadelphia, PA: Elsevier; 2022:chap 207.

Disclaimer

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. No warranty of any kind, either expressed or implied, is made as to the accuracy, reliability, timeliness, or correctness of any translations made by a third-party service of the information provided herein into any other language. © 1997- A.D.A.M., a business unit of Ebix, Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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Insomnia

Insomnia

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Insomnia - Animation

Do you have trouble falling asleep at night? Or, do you go to sleep, only to wake up a few hours later and stay awake for hours at night? Well, let's today talk about insomnia.

Your sleep-wake cycle is a delicate pattern run by something called circadian rhythms. These rhythms are physical, mental, and behavioral changes in your brain that roughly follow a 24-hour cycle. Your daily and nightly habits, many you learned as a child, may affect your circadian rhythms and how well you sleep at night.

Poor sleep or lifestyle habits that may cause insomnia include going to bed at different times each night, daytime napping, and a poor sleeping environment such as too much noise or light. Spending too much in time in bed while you're awake can change your sleep patterns too. Likewise, working evenings or night shifts and not getting enough exercise can affect your sleep.

People who use alcohol or recreational drugs may have trouble sleeping. Heavy smoking and drinking too much caffeine can also cause insomnia. And, even using some types of sleep medications a lot can cause you to lose sleep.

Medical problems can cause insomnia too. People with anxiety disorders, bipolar disorder, thyroid disease, depression, and chronic pain problems may have trouble going to sleep or staying asleep.

So, what do you do about insomnia? Well, it's important to remember that not everyone needs 8 hours of sleep every night. Some people do just fine on 6 hours of sleep, while others need much more.

If you need more sleep, your doctor will probably ask about any medications you're taking, your drug or alcohol use, and your medical history. Spend some time thinking about your lifestyle and sleep habits. It's best to avoid caffeine and alcohol at night. If you don't exercise, starting regular exercise might help you sleep better. If you're depressed or anxious, talk to your doctor to see if relaxation techniques can help, if medication might be helpful, or if seeing a mental health provider is best.

If you are suffering from bouts of insomnia, take heart. Most people can return to more normal sleep patterns when they make simple changes in their lifestyle or habits.

 

Sleep disorders - Animation

You tuck yourself under the covers, turn out the light, and look forward to eight hours of blissful slumber. But, after turning for hours you're still exhausted, and no closer to sleep than when you first got into bed. Let's talk today about sleep disorders.

Sleep disorders fall into four basic categories. The scenario I described, in which you toss and turn because you can't fall asleep, is called insomnia. Another type of insomnia is when you wake up in the middle of the night and can't get back to sleep. Sometimes people get insomnia for a night or two because they're stressed out over a big meeting at work, or they're excited about an upcoming trip. Others can't sleep night after night, and that's called chronic insomnia.

People with the second category of sleep disorders have a hard time staying awake during the day, even if they slept well the night before. This is called hypersomnia. Sometimes doctors can't find a cause for hypersomnia. But in many cases, a health condition like fibromyalgia, a thyroid problem, a disease like mononucleosis, obesity, or obstructive sleep apnea, can make you sleepy. If you notice a co-worker is nodding off in the middle of meetings, he might have narcolepsy, a sleep disorder that causes people to sleep uncontrollably at inappropriate times during the day. Narcolepsy isn't only embarrassing, it can be dangerous if you nod off behind the wheel of a car.

A sleep rhythm problem means that you can't stick to a normal sleep schedule. Maybe you work the night shift at your job, or you're always traveling to different time zones and are constantly battling jet lag. Well, whatever the cause, the lack of a normal sleep pattern is called a sleep rhythm disorder.

The good news is that you don't have to live on fewer hours of sleep, because there are decent treatments for sleep disorders. If you're struggling to sleep throughout the night, and dragging through the day as a result, talk to your doctor, who can refer you to a sleep specialist for an evaluation.

 

Insomnia - Animation

Do you have trouble falling asleep at night? Or, do you go to sleep, only to wake up a few hours later and stay awake for hours at night? Well, let's today talk about insomnia.

Your sleep-wake cycle is a delicate pattern run by something called circadian rhythms. These rhythms are physical, mental, and behavioral changes in your brain that roughly follow a 24-hour cycle. Your daily and nightly habits, many you learned as a child, may affect your circadian rhythms and how well you sleep at night.

Poor sleep or lifestyle habits that may cause insomnia include going to bed at different times each night, daytime napping, and a poor sleeping environment such as too much noise or light. Spending too much in time in bed while you're awake can change your sleep patterns too. Likewise, working evenings or night shifts and not getting enough exercise can affect your sleep.

People who use alcohol or recreational drugs may have trouble sleeping. Heavy smoking and drinking too much caffeine can also cause insomnia. And, even using some types of sleep medications a lot can cause you to lose sleep.

Medical problems can cause insomnia too. People with anxiety disorders, bipolar disorder, thyroid disease, depression, and chronic pain problems may have trouble going to sleep or staying asleep.

So, what do you do about insomnia? Well, it's important to remember that not everyone needs 8 hours of sleep every night. Some people do just fine on 6 hours of sleep, while others need much more.

If you need more sleep, your doctor will probably ask about any medications you're taking, your drug or alcohol use, and your medical history. Spend some time thinking about your lifestyle and sleep habits. It's best to avoid caffeine and alcohol at night. If you don't exercise, starting regular exercise might help you sleep better. If you're depressed or anxious, talk to your doctor to see if relaxation techniques can help, if medication might be helpful, or if seeing a mental health provider is best.

If you are suffering from bouts of insomnia, take heart. Most people can return to more normal sleep patterns when they make simple changes in their lifestyle or habits.

 

Sleep disorders - Animation

You tuck yourself under the covers, turn out the light, and look forward to eight hours of blissful slumber. But, after turning for hours you're still exhausted, and no closer to sleep than when you first got into bed. Let's talk today about sleep disorders.

Sleep disorders fall into four basic categories. The scenario I described, in which you toss and turn because you can't fall asleep, is called insomnia. Another type of insomnia is when you wake up in the middle of the night and can't get back to sleep. Sometimes people get insomnia for a night or two because they're stressed out over a big meeting at work, or they're excited about an upcoming trip. Others can't sleep night after night, and that's called chronic insomnia.

People with the second category of sleep disorders have a hard time staying awake during the day, even if they slept well the night before. This is called hypersomnia. Sometimes doctors can't find a cause for hypersomnia. But in many cases, a health condition like fibromyalgia, a thyroid problem, a disease like mononucleosis, obesity, or obstructive sleep apnea, can make you sleepy. If you notice a co-worker is nodding off in the middle of meetings, he might have narcolepsy, a sleep disorder that causes people to sleep uncontrollably at inappropriate times during the day. Narcolepsy isn't only embarrassing, it can be dangerous if you nod off behind the wheel of a car.

A sleep rhythm problem means that you can't stick to a normal sleep schedule. Maybe you work the night shift at your job, or you're always traveling to different time zones and are constantly battling jet lag. Well, whatever the cause, the lack of a normal sleep pattern is called a sleep rhythm disorder.

The good news is that you don't have to live on fewer hours of sleep, because there are decent treatments for sleep disorders. If you're struggling to sleep throughout the night, and dragging through the day as a result, talk to your doctor, who can refer you to a sleep specialist for an evaluation.

 
 
 
 

 

 
 

 
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