What's the plural form of hypercholesterolaemia? Here's the word you're looking for.
Answer
The noun hypercholesterolaemia can be countable or uncountable.
In more general, commonly used, contexts, the plural form will also be hypercholesterolaemia.
However, in more specific contexts, the plural form can also be hypercholesterolaemias e.g. in reference to various types of hypercholesterolaemias
or a collection of hypercholesterolaemias.