As a medical professional with expertise in cardiology, I can provide you with a detailed explanation of what can cause an irregular heartbeat, also known as an arrhythmia. There are several factors that can lead to this condition: 1. Heart disease: Damage to the heart muscle from a heart attack or other conditions can disrupt the heart's electrical signals, leading to an arrhythmia. 2. High blood pressure: This is a common cause of heart-related issues, including arrhythmias. 3. Electrolyte imbalances: Imbalances in the body's levels of certain minerals, such as potassium, calcium, and magnesium, can affect the electrical activity of the heart. 4. Alcohol and drug use: Excessive alcohol consumption and the use of certain drugs, both legal and illegal, can interfere with the heart's rhythm. 5. Caffeine and nicotine: These stimulants can increase the risk of an irregular heartbeat in some individuals. 6. Stress and anxiety: Intense emotional or physical stress can trigger arrhythmias in susceptible individuals. 7. Excessive exercise: While regular physical activity is good for the heart, extreme exercise can sometimes cause arrhythmias, especially in people with underlying heart conditions. 8. Medical conditions: Thyroid problems, diabetes, and other systemic diseases can affect heart rhythm. 9. Medications: Some medications, including those for heart disease, can cause an irregular heartbeat as a side effect. It's important to note that not all arrhythmias are dangerous or require treatment. However, if you experience symptoms such as palpitations, chest pain, dizziness, or fainting, it's crucial to consult with a healthcare provider to determine the cause and appropriate treatment. read more >>

When the heart beats too fast, too slow, or with a skipping (irregular) rhythm, a person is said to have an arrhythmia. A change in the heart's rhythm may feel like an extra-strong heartbeat (palpitation) or a fluttering in your chest. Premature ventricular contractions (PVCs) often cause this feeling.read more >>