Heart Palpitations & Rapid Pulse
Medically Reviewed & Fact-CheckedBy MD, Emergency Medicine & Internal Medicine
Reviewed: 9/6/2026Overview
Palpitations are an uncomfortable awareness of the heartbeat, described as fluttering, pounding, racing, or skipping beats. May be benign or indicate ventricular or supraventricular dysrhythmias.
Possible Causes
- Premature Ventricular Contractions (PVCs) / PACs
- Atrial Fibrillation or Atrial Flutter
- Supraventricular Tachycardia (SVT)
- Thyrotoxicosis (hyperthyroidism)
- Excess caffeine, nicotine, stimulant medications, severe anxiety
- Electrolyte abnormalities (hypokalemia, hypomagnesemia)
When to Seek Care
Seek immediate medical care if palpitations cause fainting, dizziness, or chest pain. Schedule an elective cardiology visit for Holter monitor tracking if episodes occur frequently.
The information provided on this website is for educational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of a qualified healthcare provider with any questions you may have regarding a medical condition.