Read below about fainting after standing up, including causes and common questions. Or get a personalized analysis of your fainting after standing up 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 Fainting After Standing Up

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

  1. 1.Orthostatic Syncope (Fainting)

    Orthostatic syncope refers to a type of loss of consciousness caused by rapidly standing up from a sitting position, and not enough blood reaches the head. This can cause a person to pass out, but then come back to consciousness without lasting effects.

    1/3 of people report experiencing similar episode within 3 years.

    Rarity:
    Uncommon
    Top Symptoms:
    lightheadedness, brief fainting episode, dizziness and lightheadedness before passing out, fainting after standing up, fainting for the first time
    Symptoms that always occur with orthostatic syncope (fainting):
    brief fainting episode, fainting after standing up
    Urgency:
    Phone call or in-person visit

    Fainting After Standing Up Checker

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  2. 2.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
  3. 3.Parkinson's Disease

    Parkinson's disease is a lifelong condition movement disorder. It is caused by the malfunction and death of nerve cells which results in symptoms like tremors.

    Parkinson's disease is a lifelong condition with no cure, however, medication and behavioral modifications may help manage symptoms.

    Rarity:
    Rare
    Top Symptoms:
    anxiety, depressed mood, difficulty concentrating, nausea, constipation
    Symptoms that always occur with parkinson's disease:
    symptoms of parkinsonism
    Urgency:
    Primary care doctor

Questions Your Doctor May Ask About Fainting After Standing Up

  • Q.How long were you unconscious?
  • Q.Do you notice your heart beating hard, rapidly, or irregularly (also called palpitations)?
  • Q.Have you been experiencing dizziness?
  • Q.Were you confused and disoriented when you woke up?

If you've answered yes to one or more of these questions, try our fainting after standing up symptom checker to find out more.

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Fainting After Standing Up Symptom Checker Statistics

  • People who have experienced fainting after standing up have also experienced:

    • 6% Fatigue
    • 5% Dizziness
    • 3% Lightheadedness
  • People who have experienced fainting after standing up were most often matched with:

    • 54% Dehydration
    • 27% Parkinson's Disease
    • 18% Orthostatic Syncope (Fainting)
  • Source: Aggregated and anonymized results from visits to the Buoy AI health assistant (check it out by clicking on “Take Quiz”).

A.I. Health Assistant

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