A rapid heartbeat with difficulty breathing may indicate a serious heart or lung problem. Avoid physical activity, stay calm, and contact your doctor or go to the nearest emergency department for assessment and appropriate treatment.

A pounding heartbeat (palpitations) may be caused by stress, anxiety, high caffeine intake, lack of sleep, or strenuous activity. It may also occur due to irregular heart rhythms or an underlying heart condition. If this happens frequently, lasts a long time, or is accompanied by chest pain, dizziness, or shortness of breath, please see a doctor promptly for evaluation.

A fast heartbeat may sometimes be normal, such as after exercise, stress, or consuming caffeine. However, you should consult a doctor promptly if it happens frequently, occurs at rest, or is accompanied by dizziness, chest pain, or shortness of breath, as it may indicate an underlying heart problem.

Chest pain with an irregular heartbeat may be a sign of a heart condition such as arrhythmia, angina, or even a heart attack. It is important not to ignore these symptoms. You should seek medical attention immediately for a proper examination and appropriate treatment. Avoid physical exertion and stressful activities until you have been assessed by a doctor.