Cardiovascular diseases are a group of diseases of the heart and blood vessels, which include: ischemic heart disease - a disease of the blood vessels that supply blood to the heart muscle; cerebrovascular disease - a disease of the blood vessels that supply blood to the brain; peripheral artery disease - disease of the blood vessels that supply blood to the arms and legs; rheumatic heart disease - damage to the heart muscle and heart valves as a result of rheumatic fever caused by streptococcal bacteria; congenital heart disease - deformations of the heart structure existing from birth; deep vein thrombosis and pulmonary embolism - the formation of blood clots in the leg veins that can move and move towards the heart and lungs. Heart attacks and strokes are usually acute illnesses and occur mainly as a result of a blockage in blood vessels that prevents blood from flowing to the heart or brain.