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