What term refers to an abnormally high level of calcium in the blood?

Hypercalcaemia refers to an abnormally high level of calcium in the blood. This condition can arise from various factors such as overactive parathyroid glands, certain cancers, excessive vitamin D intake, or certain medications. High calcium levels can lead to a range of symptoms, including fatigue, weakness, nausea, and confusion, and it can also cause issues with kidney function and heart rhythm.

The other options listed involve different conditions: hypocalcaemia is characterized by abnormally low calcium levels, hyperlipidaemia refers to high levels of lipids or fats in the blood, and hypoglycaemia denotes low blood sugar levels. Each of these terms addresses distinct health concerns that are unrelated to calcium levels, highlighting the specificity of hypercalcaemia in relation to calcium in the bloodstream.