Hypercholesterolaemia is a condition where there is high levels of cholesterol in the blood, which can increase the risk of heart disease. There are several synonyms for hypercholesterolaemia including high cholesterol, hyperlipidaemia, dyslipidaemia, and hyperlipoproteinaemia. These terms describe the abnormal levels of lipids in the bloodstream. High cholesterol is a common condition that can be managed with lifestyle changes, such as a healthy diet and exercise, as well as medications, such as statins. It is important to monitor and manage cholesterol levels to reduce the risk of heart disease and other health complications associated with hypercholesterolaemia.