Constant drowsiness
Last reviewed: 07.06.2024
All iLive content is medically reviewed or fact checked to ensure as much factual accuracy as possible.
We have strict sourcing guidelines and only link to reputable media sites, academic research institutions and, whenever possible, medically peer reviewed studies. Note that the numbers in parentheses ([1], [2], etc.) are clickable links to these studies.
If you feel that any of our content is inaccurate, out-of-date, or otherwise questionable, please select it and press Ctrl + Enter.
Constant sleepiness, also called hypersomnia, is a condition in which a person feels a constant and excessive desire to sleep throughout the day, even with adequate nighttime sleep. This condition can significantly interfere with normal daily activities and quality of life. [1]
Causes of the persistent drowsiness
Constant sleepiness, where a person feels a strong urge to sleep throughout the day, can have a variety of causes. Some of the most common causes include:
- Lackof sleep: Lack of sleep, both nighttime sleep and quality sleep, can be one of the main causes of persistent sleepiness. Not getting enough sleep prevents the body from recovering and resting, leading to drowsiness during the day.
- Sleep disorders: A variety of sleep disorders can cause persistent sleepiness. For example, sleep apnea (in which sleep is interrupted by repeatedly stopping breathing during sleep), restless legs syndrome, insomnia, and circadian sleep rhythm disorders can contribute to sleepiness.
- Medical conditions: A variety of medical conditions can cause drowsiness. These can include thyroid disease, diabetes, neurological diseases, infectious diseases, and other conditions.
- Medications: Some medications such as sedatives, antidepressants, antihistamines, and others can cause drowsiness as a side effect.
- Psychological factors: Psychological conditions such as depression, anxiety, stress and emotional overload may be associated with the occurrence of drowsiness.
- Chronic FatigueSyndrome: Chronic fatigue syndrome is characterized by constant fatigue and sleepiness, and the causes of this condition are not fully understood.
- Diet and lifestyle: Improper diet, high caffeine intake, lack of exercise and other lifestyle factors can contribute to drowsiness.
- Constant changes in bedtime and sleep problems: Working night shifts, traveling crossing time zones, and other changes in sleep patterns can disrupt circadian rhythms and cause sleepiness.
To find out the specific cause of persistent sleepiness, you should see a doctor or sleep specialist for a medical evaluation and diagnosis. He or she will be able to perform the necessary tests and make treatment recommendations depending on the factors identified. [2]
Pathogenesis
The pathogenesis of persistent sleepiness can be complex and depends on the specific cause of this condition. Here are a few common mechanisms that may be associated with persistent sleepiness:
- Lack of sleep: One of the main causes of constant sleepiness is lack of sleep. If the body does not get enough sleep or quality sleep, it can lead to an accumulation of fatigue and sleepiness throughout the day.
- Dysregulation of circadian rhythms: Disturbances in the circadian rhythms of sleep and wakefulness can cause drowsiness. This can occur, for example, when working night shifts or crossing time zones.
- Sleep disorders: Various sleep disorders such as sleep apnea (especially among obese individuals), insomnia, restless legs syndrome, and others can disrupt normal sleep patterns and cause drowsiness throughout the day.
- Medical Conditions: Certain medical conditions such as diabetes, thyroid disease, and neurological diseases can affect sleep and wakefulness regulation and contribute to drowsiness.
- Psychological factors: Stress, anxiety and depression can lead to sleep disturbances and increased sleepiness.
- Medications: Some medications, including sedatives, antidepressants, and antihistamines, can cause drowsiness as a side effect.
- Chronic Fatigue Syndrome: This syndrome is characterized by constant fatigue and sleepiness, and its exact causes are not fully understood. It can be associated with viral infections and other factors.
Understanding the pathogenesis of persistent sleepiness on a case-by-case basis requires medical evaluation and diagnosis. [3]
Symptoms of the persistent drowsiness
Constant fatigue and sleepiness can be related symptoms, but they can also have different causes and triggers. Here is general information about each of these conditions: [4]
-
Constant fatigue:
- Causes: Persistent fatigue can be caused by a variety of factors such as lack of sleep, depression, chronic illnesses (e.g., diabetes, thyroid disease), anxiety, psychological stress, and physical and emotional overwork.
- Symptoms: The main symptom of persistent fatigue is a feeling of tiredness and exhaustion that does not disappear even after adequate sleep and rest. Fatigue may be accompanied by weakness, irritability, difficulty concentrating and other symptoms.
-
Drowsiness:
- Causes: Sleepiness refers to an excessive desire to sleep during the day. It can result from lack of sleep, sleep disorders (e.g., sleep apnea, insomnia), medical conditions (e.g., diabetes, sleep apnea, neurologic diseases), taking certain medications, or other factors.
- Symptoms: Drowsiness is manifested by feeling tired and wanting to go to bed during the day. It can interfere with normal daily tasks and work.
To determine the cause of persistent fatigue and sleepiness, it is important to have a medical evaluation. A doctor may prescribe the necessary tests and examinations to identify the underlying medical condition or factors contributing to these symptoms. Treatment will depend on the identified cause and may include stress management, lifestyle adjustments, drug therapy and other measures. It is important to get professional counseling to combat these symptoms and improve your quality of life. [5]
Constant fatigue and sleepiness in women can have different mechanisms of development, and they can be the result of several factors at the same time. Here are some of the mechanisms that may contribute to the development of persistent fatigue and sleepiness in women: [6]
- Lackof sleep and insomnia: Lack of sleep or insomnia can lead to chronic fatigue and sleepiness. During the night, the body recovers its resources, and not getting enough sleep can disrupt this process.
- Hormonal changes: Hormonal fluctuations that occur in women's bodies during different periods of life (e.g. Menstruation, pregnancy, menopause) can affect sleep quality and lead to sleepiness.
- Psychological factors: Stress, anxiety and depression can be accompanied by sleepiness and fatigue. Psychological factors can affect sleep and overall physical well-being.
- Medical Conditions: Various medical problems such as anemia, diabetes, autoimmune diseases and others can cause physical fatigue and drowsiness.
- Sleep disorders: The presence of sleep disorders, such as sleep apnea (in which sleep is interrupted by repeated cessation of breathing during sleep) or restless legs syndrome, can interfere with normal sleep and cause drowsiness.
- Drugs and substances: Some drugs and substances, including alcohol and some medicines, can cause drowsiness as a side effect.
- Lifestyle and nutrition: Improper diet, lack of exercise and other aspects of lifestyle can also affect energy levels and sleepiness.
Constant fatigue and sleepiness in men can be caused by a variety of factors, both physical and emotional. These symptoms can be the result of various medical conditions or lifestyle. Below are some of the most common causes of constant fatigue and sleepiness in men: [7]
- Lackof sleep: Not getting enough sleep or sleep disorders such as insomnia or sleep apnea (stopping breathing in sleep) can cause fatigue and sleepiness throughout the day.
- Medical Conditions: Various medical conditions such as anemia, diabetes, hypothyroidism (reduced thyroid function), chronic fatigue syndrome, and others can be accompanied by persistent fatigue.
- Stress and Depression: Emotional tension, stress and depression can lead to physical and emotional fatigue as well as sleepiness.
- Constant physical activity: High intensity physical activity or hard physical labor can cause fatigue and drowsiness.
- Nutrition: Poor nutrition, irregular meals, nutrient deficiencies, or diets rich in carbohydrates and sugar can affect energy levels and cause drowsiness.
- Somnolence: Some medications, alcohol, drugs, or narcotics can cause drowsiness.
- Lifestyle: Irregular sleep and wakefulness patterns, lack of physical activity, lack of rest and overwork can cause fatigue and sleepiness.
- Medical problems: Some medical problems, such as pain, infections, or chronic illnesses, can cause fatigue.
To identify the cause of persistent fatigue and sleepiness, it is important to see a doctor for a diagnosis and evaluation of your health. Your doctor may recommend laboratory tests and discuss your lifestyle to determine the factors affecting your condition. Based on the results of the diagnosis, a treatment plan or recommendations for lifestyle changes to combat fatigue and sleepiness can be developed.
Constant sleepiness in a child can be caused by a variety of factors, and it is important to identify the specific cause so that appropriate action can be taken. Here are some possible causes of persistent sleepiness in children:
- Sleep deprivation: Children of different ages require different amounts of sleep during the day. Lack of sleep can be a major cause of sleepiness in children. A child may not sleep long enough at night or may not have regular daytime naps.
- Insomnia: Like adults, children can have insomnia. This may be due to anxiety, fears, illness or other factors.
- Sleep disorders: Children may also experience sleep disorders such as restless legs syndrome or sleep apnea, which can disrupt normal sleep patterns and cause drowsiness.
- Hormonal changes: In some cases, sleepiness in children may be related to hormonal changes, especially during periods of adolescent growth.
- Medical Problems: Various medical conditions such as anemia, infections, allergies, etc. Can cause fatigue and sleepiness in a child.
- Other factors: Fatigue can be the result of physical or mental activity, stress, changes in daily routine and diet.
- Somnolence: Somnolence is a medical condition in which a child feels sleepy and tired during the day, even if he or she has gotten enough sleep at night. It can be due to a variety of medical causes and requires careful diagnosis.
Differential diagnosis
Differential diagnosis of persistent sleepiness is the process of ruling out various possible causes of sleepiness to determine the specific medical or psychological condition that may be causing the symptom. Below are some of the major conditions and diseases that can cause persistent sleepiness and require differential diagnosis:
- Somnolent disorder (hypersomnia): Hypersomnia is a medical condition in which a person experiences persistent sleepiness and may sleep too much but still feel tired. Hypersomnia can be idiopathic (occurring without a known cause) or secondary (related to other medical conditions).
- Obstructive sleep apnea syndrome (OSAS): OSAS is characterized by repeated stops in breathing during sleep due to partial or complete blockage of the airway. It can lead to excessive daytime sleepiness and fatigue.
- Diabetes mellitus: Uncontrolled diabetes mellitus can cause drowsiness and fatigue.
- Anemia: A deficiency of iron or friendly vitamins can cause anemia, which may be accompanied by drowsiness.
- Restless legs syndrome (RLS): RLS is a neurological disorder that can interfere with normal sleep and cause insomnia, which in turn can lead to daytime sleepiness.
- Stress, anxiety and depression: Psychological factors such as depression, anxiety and chronic stress can cause drowsiness.
- Narcolepsy: Narcolepsy is a chronic neurological disorder characterized by unexplained sleepiness and the ability to fall asleep suddenly throughout the day.
- Psychiatric disorders: Some psychiatric disorders, such as schizophrenia and bipolar disorder, can cause drowsiness and changes in dreams.
- Thyroid disorders: Hypothyroidism (reduced thyroid function) may be accompanied by drowsiness and fatigue.
- Medication use: Some medications, including some antidepressants, antihistamines, and sleeping pills, may cause drowsiness as a side effect.
To determine the cause of persistent drowsiness and make a differential diagnosis, it is important to see a physician and undergo an appropriate medical examination. [8]
Treatment of the persistent drowsiness
If you have persistent drowsiness and cannot understand the cause, it is recommended that you start by seeing a primary care physician who can make an initial assessment of your condition and refer you to a specialist if necessary. Depending on your medical history and symptoms, you may see the following doctors:
- General practitioner: A general practitioner is a doctor who specializes in general medicine. He or she may make an initial assessment of your condition, ask you questions about your symptoms and medical history, and perform a physical exam. If your general practitioner cannot determine the cause of your drowsiness, he or she may refer you to other specialists.
- Neurologist: If drowsiness is accompanied by other symptoms such as headache, dizziness, sleep disturbances, or changes in vision, you may need to see a neurologist. A neurologist specializes in diseases of the nervous system.
- Somnologist (sleep specialist): If the cause of sleepiness is related to sleep disorders such as sleep apnea, insomnia, or other sleep problems, a sleep specialist can perform a sleep evaluation and recommend appropriate treatment.
- Endocrinologist: Sleepiness may be related to endocrine disorders such as diabetes or thyroid disorders. An endocrinologist specializes in treating endocrine disorders.
- Psychiatrist or psychologist: If sleepiness is related to psychological factors such as depression, anxiety, or stress, a psychiatrist or psychologist can offer appropriate treatment and support.
- Otorhinolaryngologist (ENT): Persistent sleepiness may be caused by respiratory problems such as snoring or sleep apnea. An otorhinolaryngologist specializes in treating diseases of the ear, throat and nose.
It is important to discuss your symptoms and concerns with your doctor so that he or she can perform a more accurate examination and determine the cause of your sleepiness. Do not ignore persistent sleepiness, as it may be associated with serious medical problems that require attention and treatment. [9]
Constant fatigue and sleepiness can be caused by different reasons and the treatment depends on the underlying medical diagnosis. If you experience persistent fatigue and sleepiness, it is recommended that you follow these steps:
-
Consultation with a physician:
- The first step should be to see your doctor to determine the cause of your fatigue and sleepiness. Your doctor will perform a physical examination, may order laboratory tests, and will discuss your medical and family history with you.
-
Treatment of the underlying disease:
- If fatigue and drowsiness are due to a medical condition such as anemia, diabetes, hypothyroidism, or other conditions, treatment should focus on managing these conditions under the supervision of a physician.
-
Regular sleep:
- Pay attention to the quality and regularity of your sleep. Try to improve your sleeping habits by ensuring you get enough sleep each night.
-
Healthy Lifestyle:
- Lead a healthy lifestyle, including eating right, getting regular exercise and managing stress. This can help increase your energy and reduce fatigue.
-
Avoid overexertion:
- Try to avoid excessive physical and emotional stress. Plan breaks and vacations to give your body time to recover.
-
Reconsider your medications:
- If you are taking any medications, talk to your doctor about possible side effects, including fatigue and drowsiness. Your treatment may need to be revised.
-
Psychological support:
- If fatigue and sleepiness are related to emotional stress or mental health issues, see a therapist or psychiatrist for counseling and support.
Vitamins for constant fatigue
Constant sleepiness can be caused by a variety of reasons, and one of them could be a deficiency of certain vitamins or minerals. However, before you start taking vitamins, it is important to consider that drowsiness can also be related to other factors such as lack of sleep, stress, poor diet, medical problems and lifestyle.
If you feel constantly sleepy and think it may be caused by a vitamin or mineral deficiency, see your doctor. He or she will perform an examination and may order blood tests to detect possible deficiencies.
Vitamins and minerals that can affect energy and wakefulness include the following:
- VitaminD: Vitamin D deficiency may be associated with fatigue and sleepiness. This vitamin can be obtained from sunlight and some foods, but in some cases vitamin supplements may be necessary.
- Vitamin B12: Vitamin B12 deficiency can lead to anemia and fatigue. It is usually found in animal products such as meat, fish, milk and eggs.
- Iron: Iron deficiency can cause anemia, which is accompanied by fatigue and drowsiness. Iron can be obtained from meat, fish, buckwheat and other foods.
- Folic acid (vitamin B9): Folic acid deficiency can lead to anemia and fatigue. It is found in green vegetables, beans, whole grain products, and other foods.
- Magnesium: Magnesium deficiency can cause fatigue and drowsiness. This mineral can be obtained from nuts, seeds, beans, spinach, etc.
- Fat-soluble vitamins (A, D, E, K): Deficiencies in these vitamins can also affect overall health and energy.
Remember that taking vitamins and minerals should be supervised by a doctor to avoid excessive amounts, which can also cause problems.