High blood pressure, or hypertension, is a condition that increases the force of blood against the artery walls. Learn about symptoms and treatment.
Atrial fibrillation is a heart rhythm problem that causes irregular heartbeat (arrhythmia) and abnormal blood flow.
When electrical abnormalities cause abnormal heart rhythms, this is called a heart arrhythmia. Learn more about the different types of arrhythmia and possible treatments.