What should you know about heartbeat feels irregular?

You may notice skipped beats, pauses, fluttering or a pattern that seems chaotic. Stress, poor sleep, caffeine, nicotine, alcohol, fever and some medicines can make beats more noticeable. Atrial fibrillation is one condition that can present with an irregular pulse, but the sensation alone cannot confirm it. Some people have no other symptoms; others have breathlessness, tiredness, chest discomfort or dizziness.

Record when the sensation begins, how long it lasts, whether it is continuous, and whether your pulse feels consistently uneven or only has occasional extra beats. This information can help a clinician choose an ECG or longer rhythm monitoring.

Stop strenuous activity during symptoms and sit safely. Avoid stimulants until you have been assessed, and take only medicines prescribed for you. Book a medical review for a first episode, repeated irregular beats, or symptoms with exertion. An ECG records the heart’s electrical pattern; further assessment may consider blood pressure, thyroid function and other causes. Do not start or stop anticoagulation management without clinical advice.

Seek emergency help for an irregular heartbeat with chest pain, severe breathlessness, fainting, collapse, sudden weakness on one side, facial drooping, trouble speaking, or a sudden severe headache. These neurological features can signal a stroke or transient ischaemic attack. Get urgent advice if you feel light-headed or the rhythm remains very fast and uneven.

Ask whether you need an ECG, a longer rhythm check or blood tests. Ask what symptoms suggest atrial fibrillation, how stroke risk is assessed, and whether any treatment or anticoagulation management is appropriate for you.