Arrhythmia refers to an irregular heartbeat, which can manifest as a heart that beats too fast, too slow, or in an erratic manner. This condition can affect the heart's ability to pump blood effectively, leading to various symptoms such as palpitations, dizziness, or even fainting. Factors contributing to arrhythmia include heart disease, stress, and certain medications. There are several types of arrhythmias, including atrial fibrillation and ventricular tachycardia. While some arrhythmias may be harmless, others can pose serious health risks. It is essential for individuals experiencing symptoms to consult a healthcare professional for proper diagnosis and treatment options.