This document discusses common diseases of the circulatory system, including congenital heart disease, rheumatic heart disease, high blood pressure, leukemia, and anemia.
Congenital heart disease is an inherited disorder causing abnormal blood flow. Its symptoms include rapid heartbeat, rapid breathing, and cyanosis. Rheumatic heart disease can result from rheumatic fever and causes chest pain and swelling. High blood pressure, also called hypertension, occurs when blood pressure in the arteries is too high, causing dizziness and headaches. Leukemia develops from excessive abnormal white blood cells and causes fatigue, bruising, and night sweats. Anemia is a decrease in red blood cells causing extreme fatigue, paleness, and