Problems with the rhythm of the heart and heart muscle cause a lot of anxiety. The main reason for the development of coronary heart disease is atherosclerosis. Its essence lies in the existence of atherosclerotic plaques in the blood vessels, which compress or completely block the access of blood to different parts of the heart, thereby provoking insufficient blood supply. Ischemic heart disease can develop for years, while a person does not even know about this disease in the body. The first signs of the development of coronary artery disease are discomfort in the chest region, panic attacks and fear of death. Over time, the disease progresses and manifests itself in various symptoms.