Symptoms Symptoms arising from the heart can be thought of as four main types: Chest painChest pain arising from the heart is called angina. Usually it is due to narrowings in the arteries that supply the heart muscle – the coronaries. more… Shortness of breathBreathlessness can occur suddenly at rest or can be brought on by exertion. Sometimes patients just notice a gradual reduction in their exercise tolerance. more… PalpitationsDizziness is a common symptom and often not of concern. It also means different things to different people. Occasionally dizziness becomes severe and can lead to blackouts. more… Dizziness/BlackoutsThis really does mean totally different things to different people! For most it is an ‘awareness of the heart’ – a sensation that the heart is fluttering, racing, beating irregularly or more forcefully. more…