Read below about dizziness and light-headedness, including causes and common questions. Or get a personalized analysis of your dizziness and light-headedness 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 Dizziness and Light - Headedness

The list below shows results from the use of our A.I. Health Assistant by Buoy users who experienced dizziness and light-headedness. This list does not constitute medical advice.

  1. 1.Dehydration

    Dehydration occurs when the body does not have fluid to function properly, because of decreased intake or increased losses like vomiting and diarrhea. Symptoms of dehydration include extreme thirst, dark urine, fatigue, and dizziness.

    With rehydration, symptoms resolve completely.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, dizziness, vomiting or diarrhea, racing heart beat, being severely ill
    Urgency:
    Hospital emergency room
  2. 2.Meniere's Disease

    Meniere's disease is a disorder of the inner ear. It can cause severe dizziness, a roaring sound in the ears called tinnitus, hearing loss that comes and goes and the feeling of ear pressure or pain. Meniere's commonly develops between the ages of 20 and 40, and most often starts in only one ear.

    Life-long condition, attacks may happen 6-11 times per year on average.

    Rarity:
    Uncommon
    Top Symptoms:
    nausea, ringing in the ears, vertigo (extreme dizziness), ear fullness/pressure, brief fainting episode
    Symptoms that always occur with meniere's disease:
    dizziness: at least 2 episodes
    Urgency:
    Primary care doctor
  3. 3.Vestibular Dysfunction

    The vestibular system includes the parts of the inner ear and brain that process the sensory information involved with controlling balance and eye movements. If disease or injury damages these processing areas, vestibular dysfunction can result. People with vestibular dysfunction usually get light headed, or lose balance easily. It can also result from or be worsened by genetic or environmental conditions, or occur for unknown reasons.

    Usually goes away on its own within 6-12 months.

    Rarity:
    Uncommon
    Top Symptoms:
    nausea, vertigo (extreme dizziness)
    Urgency:
    Primary care doctor
  4. 4.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

    Dizziness and Light - Headedness Checker

    Take a quiz to find out why you’re having dizziness and light-headedness.

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  5. 5.Congenital Long Qt Syndrome

    Congenital Long QT syndrome is a disorder of the heart's electrical activity from birth, causing possibly dangerous rhythm changes.

    Life long

    Rarity:
    Rare
    Top Symptoms:
    racing heart beat, brief fainting episode, not having protected the body during the fall, feeling completely normal before fainting, dizziness and light-headedness
    Urgency:
    In-person visit
  6. 6.Hypertrophic Cardiomyopathy

    Hypertrophic cardiomyopathy (HCM) is a disease in which the heart muscle (myocardium) becomes abnormally thick (hypertrophied). This happens sometimes as a result of long-term elevated blood pressure, and sometimes without any particular reason. The thickened heart muscle can make it harder for the heart to pump blood.

    Hypertrophic cardiomyopathy is a life-long condition, as the heart walls are permanently enlarged.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, shortness of breath, dizziness, racing heart beat, shortness of breath on exertion
    Urgency:
    Primary care doctor
  7. 7.Benign Paroxysmal Positional Vertigo

    Benign paroxysmal positional vertigo is a common disorder of the inner ear that causes episodes of intense dizziness with head movements. It is believed this is caused by tiny calcium crystals in the inner ear that become dislodged from their usual position within the inner ear.

    Condition will either resolve on its own or is highly treatable with a physical maneuver.

    Rarity:
    Uncommon
    Top Symptoms:
    nausea, episodic dizziness, vomiting, vertigo (extreme dizziness), dizziness
    Symptoms that always occur with benign paroxysmal positional vertigo:
    episodic dizziness
    Symptoms that never occur with benign paroxysmal positional vertigo:
    hearing loss, heartbeat sound in the ear, ringing in the ears
    Urgency:
    Primary care doctor
  8. 8.Atrial Fibrillation

    An arrhythmia is a problem with the speed or rhythm of the heartbeat. The atria comprise two out of the four chambers of the heart. When their beat is disturbed, symptoms such as a racing heart, chest pain, breathlessness, and dizziness may occur.

    More than 1/2 of people with short term atrial fibrillation get their normal heart rhythm back in less than 2 days without any treatment.

    Rarity:
    Rare
    Top Symptoms:
    fatigue, chest pain, shortness of breath, racing heart beat, lightheadedness
    Urgency:
    Emergency medical service

Questions Your Doctor May Ask About Dizziness and Light - Headedness

  • Q.Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?
  • Q.Do you notice your heart beating hard, rapidly, or irregularly (also called palpitations)?
  • Q.Have you experienced any nausea?
  • Q.Did you faint?

If you've answered yes to one or more of these questions, try our dizziness and light-headedness symptom checker to find out more.

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Dizziness and Light - Headedness Symptom Checker Statistics

  • People who have experienced dizziness and light-headedness have also experienced:

    • 7% Nausea
    • 6% Fatigue
    • 6% Headache
  • People who have experienced dizziness and light-headedness had symptoms persist for:

    • 41% Less Than a Day
    • 25% Less Than a Week
    • 17% Over a Month
  • People who have experienced dizziness and light-headedness were most often matched with:

    • 50% Dehydration
    • 25% Meniere's Disease
    • 25% Vestibular Dysfunction
  • 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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