Covid and palpitations: what to know

A raised temperature, reduced fluid intake and the strain of an infection can temporarily increase the heart rate. Worry, poor sleep and stimulants such as caffeine may add to the sensation. Some people notice palpitations while tired or after mild activity during recovery.

Palpitations do not by themselves identify a heart condition. Anaemia, thyroid overactivity, low blood sugar and an abnormal rhythm such as atrial fibrillation can also cause them. A clinician may ask when they occur, check your pulse and arrange an electrocardiogram or blood tests.

Rest, take fluids regularly if you have no medical restriction, and follow the treatment plan given for COVID-19. Avoid strenuous exercise while feverish or feeling unwell. Record what the sensation feels like, how long it lasts, your temperature, and whether dizziness or chest discomfort occurs.

Arrange a GP consultation if episodes keep returning, last longer as you recover, or interfere with ordinary activity. Do not start iron, heart or thyroid medicines without advice; the right treatment depends on the cause.

Seek urgent medical help for palpitations with chest pain, severe breathlessness, fainting, marked dizziness, confusion, or a heartbeat that remains very fast or irregular at rest. Call emergency services if symptoms are sudden, severe or worsening.

Could dehydration, anaemia, thyroid activity or a rhythm problem explain my symptoms? Do I need an ECG or blood tests? When can I safely return to exercise, and which medicines or stimulants should I avoid?