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