What it is
Racing heart (tachycardia) describes an abnormally fast heart rate — typically defined as above 100 beats per minute at rest — or the subjective experience of a rapid, pounding heartbeat.
Research-supported
Racing Heart
An abnormally fast or pounding heartbeat experienced at rest — which may be physiological (exercise, anxiety) or indicate a cardiac arrhythmia requiring assessment.
CategoryCardiovascular
Reviewed by Gyfts Editorial Team · Editorial Health Review
26 March 2026
At a glance
Racing Heart at a glance
Commonly experienced as
- People describe sudden or gradual onset of an abnormally fast heartbeat — sometimes with visible pulsation at the neck, breathlessness, dizziness, or just the alarming awareness of the speed of the heartbeat.
Evidence context
Research-supportedSee the evidence snapshotSafety
See staying safeContext
Patterns of Racing Heart
Racing heart describes the subjective experience or objective measurement of a heart rate that is faster than expected for the current physiological state. It encompasses sinus tachycardia (normal rhythm but fast rate, driven by physiological stressors including fever, anaemia, dehydration, pain, anxiety, or thyrotoxicosis) and pathological tachyarrhythmias (atrial fibrillation, SVT, atrial flutter, ventricular tachycardia). Anxiety and panic disorder produce the most common non-cardiac racing heart presentations — the sympathetic surge of the fight-or-flight response accelerates the sinus rate, often accompanied by palpitations and the perceived threat of cardiac danger. Postural orthostatic tachycardia syndrome (POTS) produces marked heart rate rise on standing. The clinical priority is distinguishing benign from potentially life-threatening causes through history, examination, and ECG.
Could this be you
People commonly experience
Racing Heart shows up differently for everyone. Browse by how it tends to be felt — these are common experiences, not a checklist or a diagnosis.
In the body1 common experience
- People describe sudden or gradual onset of an abnormally fast heartbeat — sometimes with visible pulsation at the neck, breathlessness, dizziness, or just the alarming awareness of the speed of the heartbeat.
Common experiences people describe — not a diagnostic checklist.
The Evidence
Evidence context: Racing Heart
What the evidence says about causes, investigation, and care options for a racing heart — and when to seek urgent assessment.
Overall pictureHigh evidence base
Racing heart has well-understood causes — but needs proper assessment
A racing heart can range from a benign stress response to a serious arrhythmia. The evidence base for investigation and management is strong, but distinguishing cause requires clinical assessment — not self-management alone.
When to seek urgent careSome racing heart presentations require immediate medical attention — do not wait.
Racing heart with chest pain, fainting, or breathlessness may indicate a serious arrhythmia and requires emergency assessment. Sudden-onset rapid heart rate that does not resolve, or racing heart in a young person during exertion with dizziness, also warrants urgent evaluation. Racing heart with weight loss, tremor, and heat intolerance may suggest a thyroid condition.
What the evidence showsThe evidence for investigating and managing racing heart is well established.
ECG is the primary tool for distinguishing sinus tachycardia from arrhythmia. Anxiety and panic disorder are among the most common non-cardiac causes, with strong evidence supporting CBT and SSRI approaches. SVT, AF, and POTS each have defined management pathways. Evidence quality is high for cardiac causes; moderate for anxiety-related presentations.
How racing heart is assessedClinical assessment focuses on identifying the underlying cause before any management begins.
A clinician will take a detailed history, examine for signs of thyroid, cardiac, or autonomic causes, and arrange an ECG. Further tests may include blood work for anaemia, thyroid function, and electrolytes. The cause — not the symptom alone — determines the appropriate care pathway.
Traditional and complementary perspectivesSeveral traditional systems address racing heart, particularly when linked to stress or anxiety.
Slow extended-exhale breathing and cold water face immersion are traditional vagal activation practices with some physiological basis. Hawthorn berry is used in European herbal medicine for cardiac tone. Ayurvedic and acupuncture approaches address anxiety-related palpitations. Evidence for these approaches is limited; they should complement, not replace, professional assessment.
Safety considerationsSelf-managing a racing heart without professional assessment carries real risk.
Using herbal cardiac agents without an ECG or clinical assessment is not appropriate — the cause must be established first. Excessive caffeine and stimulants should be avoided in any unexplained racing heart. If you are uncertain about the cause of your symptoms, professional assessment is the appropriate first step.
Who to seeThe right practitioner depends on the likely cause and how the symptom is presenting.
A GP or primary care clinician is the appropriate first contact for most racing heart presentations. Cardiology referral is indicated if arrhythmia is suspected or confirmed. Endocrinology input may be needed if thyroid disease is identified. For anxiety-related presentations, a mental health professional or psychologist experienced in CBT is well placed to help.
Safety first
Staying safe
General, informational guidance — not diagnostic. A qualified practitioner can advise on your own situation.
- Self-medicating racing heart with herbal cardiac agents without ECG assessment is inappropriate
- Excessive caffeine should be avoided in all unexplained racing heart presentations
References
Evidence & Research
Educational sources that inform this overview. Inclusion is for context and does not imply endorsement.
- Microvascular angina and the continuing dilemma of chest pain with normal coronary angiograms
- Panic disorder in patients with chest pain and angiographically normal coronary arteries
- Cardiovascular death from panic disorder and panic-like anxiety
Full citations are maintained by the Gyfts editorial team and reviewed periodically.
Keep exploring
Find Racing Heart practitioners you can trust
Browse practitioners, explore honest overviews, and take what you learn to a conversation — at your own pace.