Dizziness is a common symptom. It may be described as lightheadedness, spinning, or feeling like you are going to faint. Dizziness can have many causes.
Disorders in the heart's electrical system can lead to arrhythmias, or an abnormal heart rhythm. There are many types of arrhythmias and they're classified by where they occur in the heart and their pattern of abnormality. This segment will explain the arrhythmia known as Atrial Fibrillation.