Which of the following is NOT a type of hyperlipidemia?

Chronic is not recognized as a specific type of hyperlipidemia in medical terminology. Hyperlipidemia is generally classified into two main categories: primary (familial) and secondary (acquired). Primary hyperlipidemia is inherited and arises from genetic defects that affect lipid metabolism, leading to elevated lipid levels. Secondary hyperlipidemia occurs due to other conditions or factors such as obesity, diabetes, or lifestyle choices, which can impact lipid levels.

Idiopathic hyperlipidemia, while not commonly used in practice, generally refers to cases where the cause of elevated lipids is unknown. However, it is acknowledged in clinical contexts.

In contrast, chronic is a term that pertains to the duration or persistence of a condition rather than serving as a classification of hyperlipidemia. It does not specifically define a type of disorder related to lipid levels, making it the appropriate choice for the correct answer in this context.