Read below about fast heart rate in adults, including causes and common questions. Or get a personalized analysis of your fast heart rate in adults 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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3 Potential Fast Heart Rate in Adults Causes

Disclaimer: The article does not replace an evaluation by a physician. Information on this page is provided as an information resource only, and is not to be used or relied on for any diagnostic or treatment purposes.

  1. 1.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

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  2. 2.Wolff - Parkinson - White Syndrome

    Wolff-Parkinson-White syndrome is a heart condition in which there is an abnormal extra electrical pathway of the heart. The condition can lead to periods of rapid heart rate.

    Chronic but manageable

    Rarity:
    Rare
    Top Symptoms:
    racing heart beat, shortness of breath, deep chest pain, behind the breast bone, lightheadedness, irregular heart beat
    Urgency:
    Primary care doctor
  3. 3.Heatstroke

    Heatstroke occurs when the body can no longer maintain a safe temperature. It occurs when dehydration and sun exposure progress to the point where the body reaches temperatures of 105 degrees Fahrenheit. This is a medical emergency, and can damage internal organs and the brain if left untreated.

    An emergency department can begin to reverse the symptoms of heatstroke within minutes. Lingering symptoms, such as heat sensitivity, may persist for a week or two.

    Rarity:
    Rare
    Top Symptoms:
    fever, being severely ill, fatigue, severe fever, feeling confused and not making sense while talking
    Symptoms that always occur with heatstroke:
    being severely ill, severe fever
    Urgency:
    Hospital emergency room

Questions Your Doctor May Ask About Fast Heart Rate in Adults

  • Q.Have you been feeling more tired than usual, lethargic or fatigued despite sleeping a normal amount?
  • Q.Any fever today or during the last week?
  • Q.Do you currently smoke?
  • Q.Have you been experiencing dizziness?

If you've answered yes to one or more of these questions, try our fast heart rate in adults symptom checker to find out more.

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Fast Heart Rate in Adults Symptom Checker Statistics

  • People who have experienced fast heart rate in adults have also experienced:

    • 14% Racing Heart Beat
    • 5% Shortness of Breath
    • 5% Fatigue
  • People who have experienced fast heart rate in adults were most often matched with:

    • 17% Overactive Thyroid
    • 8% Wolff - Parkinson - White 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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