Conduction abnormalities refer to issues in the heart's electrical system that disrupt the normal flow of electrical impulses. This can lead to irregular heartbeats, known as arrhythmias, which may cause symptoms like dizziness, palpitations, or fainting. Common types include atrioventricular block and bundle branch block, which affect how signals travel through the heart. These abnormalities can result from various factors, including heart disease, congenital defects, or medications. Diagnosis typically involves tests such as electrocardiograms (ECGs) to monitor heart activity. Treatment options may include lifestyle changes, medications, or procedures like pacemaker implantation to restore normal rhythm.