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