Atrial fibrillation, commonly known as AFib, is a heart condition characterized by an irregular and often rapid heartbeat. This occurs when the electrical signals in the heart become disorganized, leading to ineffective pumping of blood. People with AFib may experience symptoms such as palpitations, shortness of breath, and fatigue, but some may not notice any symptoms at all. AFib can increase the risk of serious complications, including stroke and heart failure. It is often diagnosed through an electrocardiogram (ECG) and can be managed with medications, lifestyle changes, or procedures like cardioversion or ablation. Regular monitoring and treatment are essential for maintaining heart health.