Read below about severe fatigue, including causes and common questions. Or get a personalized analysis of your severe fatigue from our A.I. health assistant. At Buoy, we build tools that help you know what’s wrong right now and how to get the right care.

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A.I. Health Assistant Causes for Severe Fatigue

Updated on Aug. 29, 2018

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced severe fatigue. This list does not constitute medical advice.

  1. 1.Sleep Deprived

    Sleep is very important to health and adults should get a minimum of 7 hours each night. Sleep deprivation causes daytime sleepiness, fatigue, and headaches.

    Resolves with adequate sleep.

    Rarity:
    Common
    Top Symptoms:
    fatigue, daytime sleepiness, sleep duration less than 7 hours, difficulty concentrating
    Symptoms that always occur with sleep deprived:
    sleep duration less than 7 hours, daytime sleepiness
    Symptoms that never occur with sleep deprived:
    nausea or vomiting, being severely ill, fever, unintentional weight loss
    Urgency:
    Wait and watch
  2. 2.Depression

    Depression is a mental disorder in which a person feels constantly sad, hopeless, discouraged, and loses interest in activities and life on more days than not. These symptoms interfere with daily life, work, and friendships.

    Depression's course is highly variable, and it may last weeks, months, or years.

    Rarity:
    Common
    Top Symptoms:
    fatigue, depressed mood, headache, anxiety, irritability
    Symptoms that always occur with depression:
    depressed mood
    Urgency:
    Primary care doctor
  3. 3.Chronic Fatigue Syndrome

    Chronic fatigue syndrome is a disease that causes unexplained fatigue that does not improve with rest.

    Chronic fatigue syndrome is a life-long condition.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, difficulty concentrating, severe fatigue, trouble sleeping, impaired social or occupational functioning
    Symptoms that always occur with chronic fatigue syndrome:
    fatigue, impaired social or occupational functioning
    Symptoms that never occur with chronic fatigue syndrome:
    mild fatigue, fever
    Urgency:
    Primary care doctor
  4. 4.Fibromyalgia

    Fibromyalgia is a disorder that causes widespread pain, tenderness, and fatigue.

    Fibromyalgia is generally a lifelong condition

    Rarity:
    Common
    Top Symptoms:
    fatigue, arthralgias or myalgias, anxiety, depressed mood, headache
    Symptoms that always occur with fibromyalgia:
    arthralgias or myalgias
    Urgency:
    Primary care doctor
  5. 5.Overactive Thyroid

    The thyroid is a butterfly-shaped gland in the neck, just above your collarbone. It is one of your endocrine glands, which make hormones. Thyroid glands control how fast one burns calories and how fast the heart beats. If the thyroid is too active, it makes more thyroid hormones than the body needs. This is called hyperthyroidism.

    Great prognosis with high remission rates

    Rarity:
    Uncommon
    Top Symptoms:
    fatigue, anxiety, depressed mood, irritability, trouble sleeping
    Urgency:
    Primary care doctor

    Severe Fatigue Checker

    Take a quiz to find out why you’re having severe fatigue.

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  6. 6.Iron Deficiency Anemia

    Anemia is a condition in which the body does not have enough healthy red blood cells, which deliver oxygen. Iron deficiency anemia occurs when the body does not have enough iron. Iron helps make red blood cells.

    Resolves with treatment

    Rarity:
    Common
    Top Symptoms:
    fatigue, headache, shortness of breath, dizziness, heavy menstrual flow
    Urgency:
    Primary care doctor
  7. 7.Hypothyroidism

    Hypothyroidism occurs when the thyroid, a butterfly-shaped organ inside the neck, no longer produces adequate levels of hormones. Thyroid hormones are essential for many bodily functions including breathing, heart rate, and metabolism.

    Most cases of hypothyroidism require lifelong hormone replacement therapy.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, depressed mood, difficulty concentrating, weight gain, muscle aches
    Urgency:
    Primary care doctor
  8. 8.Chronic Obstructive Pulmonary Disease (Copd)

    COPD (chronic obstructive pulmonary disease) is a chronic condition of the lungs and the airways in the lungs. Damage has occured due to long-term exposure to substances that irritate and damage the lungs, such as cigarette smoke or air pollution. This damage can cause symptoms like shortness of breath, decreased exercise tolerance and cough. A common cold or other types of infection can cause symptoms to worden acutely, this is called an exacerbation.

    Often a lifelong condition

    Rarity:
    Common
    Top Symptoms:
    fatigue, cough and dyspnea related to smoking, cough, shortness of breath, trouble sleeping
    Symptoms that always occur with chronic obstructive pulmonary disease (copd):
    cough and dyspnea related to smoking
    Symptoms that never occur with chronic obstructive pulmonary disease (copd):
    rectal bleeding
    Urgency:
    Primary care doctor
  9. 9.Insomnia Disorder

    Insomnia is a very common sleep disorder that prevents one from falling asleep, staying asleep, or a combination of both.

    Condition is treatable with medication and behavior changes.

    Rarity:
    Common
    Top Symptoms:
    fatigue, irritability, difficulty concentrating, mild headache, insomnia
    Symptoms that always occur with insomnia disorder:
    trouble sleeping
    Urgency:
    Primary care doctor
  10. 10.Obstructive Sleep Apnea

    Sleep apnea is a disorder in which the upper airway is obstructed during sleep, which causes poor sleep quality and frequent awakening.

    Sleep apnea is a lifelong condition but symptoms can be well managed with treatment.

    Rarity:
    Common
    Top Symptoms:
    fatigue, irritability, daytime sleepiness, trouble sleeping, sore throat
    Symptoms that always occur with obstructive sleep apnea:
    snoring or apneas
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Severe Fatigue

  • Q.Any fever today or during the last week?
  • Q.Are you experiencing a headache?
  • Q.Have you lost your appetite recently?
  • Q.Have you experienced any nausea?

If you've answered yes to one or more of these questions, try our severe fatigue symptom checker to find out more.

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Severe Fatigue Symptom Checker Statistics

  • People who have experienced severe fatigue have also experienced:

    • 5% Nausea
    • 4% Headache
    • 3% Fatigue
  • People who have experienced severe fatigue had symptoms persist for:

    • 35% Over a Month
    • 24% Less Than a Week
    • 19% Less Than a Day
  • People who have experienced severe fatigue were most often matched with:

    • 57% Depression
    • 42% Chronic Fatigue Syndrome
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

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